| Country name | 2010 | 2011 | 2012 | 2013 | ||
|---|---|---|---|---|---|---|
| Afghanistan | 11.0 | 11.4 | 9.9 |
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| Albania | ||||||
| Algeria | 37.1 | 40.6 |
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| American Samoa | ||||||
| Andorra | ||||||
| Angola | 35.6 | 47.9 | 40.2 |
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| Antigua and Barbuda | 20.9 | 19.5 | 19.9 |
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| Argentina | ||||||
| Armenia | 22.6 | 22.7 | 24.1 |
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| Aruba | ||||||
| Australia | 23.4 | 22.8 | 23.7 |
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| Austria | 35.4 | 35.2 | 35.7 |
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| Azerbaijan | 46.8 | 45.5 | 41.8 |
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| Bahamas, The | 16.3 | 18.1 | 17.3 |
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| Bahrain | 22.2 | 24.9 |
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| Bangladesh | 9.7 | 10.5 |
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| Barbados | 27.2 | |||||
| Belarus | 31.4 | 29.0 | 30.0 |
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| Belgium | 39.5 | 40.1 | 41.4 |
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| Belize | 27.4 | 26.8 | 26.1 |
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| Benin | 18.3 | 17.3 | 17.0 |
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| Bermuda | ||||||
| Bhutan | ||||||
| Bolivia | ||||||
| Bosnia and Herzegovina | 39.1 | 39.5 | 40.2 |
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| Botswana | 33.7 | 36.0 | 37.3 |
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| Brazil | 26.2 | 25.0 | 26.0 |
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| Brunei Darussalam | ||||||
| Bulgaria | 28.9 | 28.2 | 29.0 |
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| Burkina Faso | 14.9 | 16.2 | 18.2 |
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| Burundi | ||||||
| Cabo Verde | 20.0 | 22.3 | 20.8 |
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| Cambodia | 11.5 | 11.6 | 13.2 |
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| Cameroon | ||||||
| Canada | 17.1 | 17.0 | 17.2 | 17.2 |
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| Cayman Islands | ||||||
| Central African Republic | 9.9 | 9.6 | 11.1 |
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| Chad | ||||||
| Chile | 21.5 | 22.7 | 22.2 |
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| China | 11.5 | 11.6 |
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| Colombia | 21.5 | 23.5 | 26.4 |
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| Comoros | ||||||
| Congo, Dem. Rep. | 14.3 | |||||
| Congo, Rep. | ||||||
| Costa Rica | 23.7 | 24.2 | 24.3 |
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| Cote d'Ivoire | 15.8 | 12.5 | 16.2 |
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| Croatia | 33.6 | 32.9 | 33.9 |
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| Cuba | ||||||
| Curacao | ||||||
| Cyprus | 39.8 | 39.0 | 39.1 |
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| Czech Republic | 27.4 | 27.8 | 28.2 |
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| Denmark | 38.6 | 39.6 | 39.4 |
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| Djibouti | ||||||
| Dominica | 26.4 | 26.0 | 25.1 |
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| Dominican Republic | 13.9 | 13.7 |
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| Ecuador | ||||||
| Egypt, Arab Rep. | 24.8 | 21.9 | 21.5 |
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| El Salvador | 19.0 | 20.4 | 20.3 |
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| Equatorial Guinea | ||||||
| Eritrea | ||||||
| Estonia | 33.7 | 32.4 | 32.9 |
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| Ethiopia | 10.8 | 10.9 |
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| Faeroe Islands | ||||||
| Fiji | ||||||
| Finland | 35.2 | 36.8 | 37.4 |
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| France | 41.6 | 41.4 | 42.4 |
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| French Polynesia | ||||||
| Gabon | ||||||
| Gambia, The | ||||||
| Georgia | 23.9 | 25.2 | 25.7 |
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| Germany | 27.6 | 28.0 | 28.2 |
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| Ghana | 16.7 | 19.4 |
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| Greece | 38.4 | 41.2 | 42.7 |
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| Greenland | ||||||
| Grenada | 19.9 | 20.2 | 19.7 |
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| Guam | ||||||
| Guatemala | 11.1 | 11.4 | 11.5 |
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| Guinea | ||||||
| Guinea-Bissau | ||||||
| Guyana | ||||||
| Haiti | ||||||
| Honduras | 20.6 | 20.9 | 21.1 |
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| Hong Kong SAR, China | ||||||
| Hungary | 39.2 | 47.6 | 40.1 |
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| Iceland | 28.6 | 28.7 | 30.2 |
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| India | 12.9 | 11.2 | 12.4 |
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| Indonesia | ||||||
| Iran, Islamic Rep. | ||||||
| Iraq | ||||||
| Ireland | 30.9 | 29.9 | 30.4 |
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| Isle of Man | ||||||
| Israel | 32.7 | 33.0 | 31.7 |
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| Italy | 36.6 | 36.2 | 37.1 |
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| Jamaica | 31.3 | 30.4 | 31.8 |
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| Japan | 11.2 | 11.3 | 11.2 |
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| Jordan | 22.7 | 20.5 | 21.5 |
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| Kazakhstan | ||||||
| Kenya | 16.4 | 16.6 | 17.6 |
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| Kiribati | 58.7 | 50.9 | 66.5 |
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| Korea, Dem. Rep. | ||||||
| Korea, Rep. | 21.0 | 21.6 |
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| Kosovo | ||||||
| Kuwait | 61.8 | 67.6 | 61.7 |
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| Kyrgyz Republic | 19.4 | 21.1 | 23.2 |
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| Lao PDR | 14.4 | 15.1 | 16.6 |
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| Latvia | 25.0 | 24.8 | 25.5 |
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| Lebanon | 20.3 | 21.8 | 20.3 |
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| Lesotho | ||||||
| Liberia | 20.9 | 20.8 | 24.8 |
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| Libya | ||||||
| Liechtenstein | ||||||
| Lithuania | 26.9 | 26.2 | 26.8 |
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| Luxembourg | 39.6 | 39.0 | 40.1 |
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| Macao SAR, China | 36.4 | 40.1 | 39.1 |
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| Macedonia, FYR | 29.1 | 28.6 | 28.3 |
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| Madagascar | 11.2 | 10.3 |
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| Malawi | ||||||
| Malaysia | 20.0 | 20.9 | 22.1 |
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| Maldives | 23.2 | 27.3 |
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| Mali | 17.3 | 16.0 | 16.6 | 17.8 |
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| Malta | 37.4 | 36.6 | 37.1 |
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| Marshall Islands | ||||||
| Mauritania | ||||||
| Mauritius | 22.8 | 22.4 | 23.0 |
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| Mexico | ||||||
| Micronesia, Fed. Sts. | ||||||
| Moldova | 31.6 | 30.7 | 31.2 |
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| Monaco | ||||||
| Mongolia | 33.7 | 34.0 | 30.5 |
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| Montenegro | ||||||
| Morocco | 31.8 | 33.4 | 35.7 |
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| Mozambique | 17.9 | 20.6 | 22.9 |
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| Myanmar | ||||||
| Namibia | 23.8 | 25.9 |
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| Nepal | 14.9 | 14.9 | 16.0 | 17.5 |
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| Netherlands | 38.5 | 38.0 | 38.9 |
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| New Caledonia | ||||||
| New Zealand | 35.1 | 36.7 | 36.1 |
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| Nicaragua | 14.4 | 15.6 | 16.2 |
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| Niger | ||||||
| Nigeria | 5.6 | 5.6 | 5.0 |
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| Northern Mariana Islands | ||||||
| Norway | 47.8 | 49.2 | 49.1 |
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| Oman | 34.8 | 39.3 | 44.7 |
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| Pakistan | 13.8 | 12.2 | 12.7 | 14.4 |
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| Palau | ||||||
| Panama | ||||||
| Papua New Guinea | ||||||
| Paraguay | 19.9 | 20.9 | 22.6 |
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| Peru | 20.1 | 20.9 | 21.5 |
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| Philippines | 13.4 | 14.0 | 14.4 |
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| Poland | 29.5 | 30.0 | 30.3 |
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| Portugal | 35.0 | 38.8 | 34.6 |
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| Puerto Rico | ||||||
| Qatar | 34.2 | |||||
| Romania | 30.4 | 30.1 | 30.7 |
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| Russian Federation | 26.1 | 31.3 | 29.8 |
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| Rwanda | 14.3 | 14.9 | 14.8 | 15.1 |
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| Samoa | 0.0 | 0.0 | 0.0 |
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| San Marino | ||||||
| Sao Tome and Principe | 19.0 | 18.0 | 15.3 |
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| Saudi Arabia | ||||||
| Senegal | 19.3 | 20.2 | 20.2 |
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| Serbia | 36.5 | 35.0 | 34.9 |
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| Seychelles | 35.0 | 35.7 | 37.5 |
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| Sierra Leone | 9.8 | 11.5 | 12.2 |
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| Singapore | 17.0 | 17.3 | 18.0 |
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| Sint Maarten (Dutch part) | ||||||
| Slovak Republic | 27.3 | 27.9 | 27.8 |
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| Slovenia | 36.1 | 36.2 | 38.0 |
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| Solomon Islands | ||||||
| Somalia | ||||||
| South Africa | 28.9 | 29.4 | 29.4 |
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| South Sudan | ||||||
| Spain | 24.6 | 23.0 | 20.5 |
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| Sri Lanka | 14.6 | 14.3 | 13.9 |
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| St. Kitts and Nevis | 27.2 | 33.1 | 32.6 |
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| St. Lucia | 23.1 | 23.5 | 23.0 |
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| St. Martin (French part) | ||||||
| St. Vincent and the Grenadines | 26.3 | 25.3 | 25.2 |
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| Sudan | ||||||
| Suriname | 20.5 | 23.7 | 25.5 |
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| Swaziland | ||||||
| Sweden | 31.2 | 30.9 | 30.7 |
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| Switzerland | 16.5 | 17.0 |
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| Syrian Arab Republic | ||||||
| Tajikistan | ||||||
| Tanzania | 17.2 | 18.7 | 17.3 |
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| Thailand | 20.3 | 21.3 | 20.5 |
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| Timor-Leste | ||||||
| Togo | 17.4 | 17.9 | 18.6 |
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| Tonga | ||||||
| Trinidad and Tobago | 35.5 | |||||
| Tunisia | 28.8 | 32.6 | 31.2 |
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| Turkey | 33.4 | 33.2 | 34.6 |
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| Turkmenistan | ||||||
| Turks and Caicos Islands | ||||||
| Tuvalu | ||||||
| Uganda | 12.4 | 16.4 | 13.2 |
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| Ukraine | 34.3 | 36.3 | 37.3 |
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| United Arab Emirates | 3.4 | 3.2 |
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| United Kingdom | 34.2 | 34.7 | 36.1 |
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| United States | 16.2 | 16.4 | 16.6 | 18.3 |
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| Uruguay | 31.0 | 30.5 | 30.7 |
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| Uzbekistan | ||||||
| Vanuatu | 17.9 | 18.5 |
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| Venezuela, RB | ||||||
| Vietnam | ||||||
| Virgin Islands (U.S.) | ||||||
| West Bank and Gaza | ||||||
| Yemen, Rep. | ||||||
| Zambia | 13.9 | 17.3 |
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| Zimbabwe |