Chart.info has a new post showing the largest 20 Top Level Domains (TLDs) calculated from the number of pages Google has indexed for each.

The largest 20 TLDs calculated this way are (Largest first)

.com
.net
.cn … China
.org
.de … Germany
.jp …. Japan
.ru …. Russia
.uk … United Kingdom
.kr …. Korea
.pl …. Poland
.info
.it ….. Italy
.fr ….. France
.cz …. Czech Republic
.br …. Brazil
.tw … Taiwan
.ua … Ukraine
.au … Australia
.nl …. Netherlands
.ca … Canada

Source Charts.info / Domain Name Charts