Starting in 1996, Alexa Internet has been donating their crawl data to the Internet Archive. Flowing in every day, these data are added to the Wayback Machine after an embargo period.
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Table 1 is also available for downloading: ASCII,
comma-delimited,
dBase III+ (self-extracting),
WP 5.1 (self-extracting), and
PDF.
WP and PDF versions of both tables highlight changes between April 1997 and May 1998 in bold.