Envirotruth.org(great site and getting better)
Association of British Drivers
CO2 Science Magazine click on the search.
I'm sure you could find more sources on google too.
The numbers will vary slightly from source to source and the Brits use Gigaton, whereas the rest of the world uses Billionton both = 109
Did you see the bit about what the temps did immediately after 9/11 - no jets flying for several days - ??
Wish I would have bookmarked that article.
Thanks, again.
LVM