The American Thinker has a piece about this, with a downloadable Excel file with the data, for the obsessives out there.
The Kyoto treaty was agreed upon in late 1997 and countries started signing and ratifying it in 1998. A list of countries and their carbon dioxide emissions due to consumption of fossil fuels is available from the U.S. government. If we look at that data and compare 2004 (latest year for which data is available) to 1997 (last year before the Kyoto treaty was signed), we find the following.
Emissions worldwide increased 18.0%.
Emissions from countries that signed the treaty increased 21.1%.
Emissions from non-signers increased 10.0%.
Emissions from the U.S. increased 6.6%.
So, is it better to sign, or not to sign?