Did George Bush stop global warming?

I looked at the global warming data and noticed that the global temperature was low last year, 2008. Indeed, the global temperature was much lower than when George Bush took office in 2001.

Here are the annual numbers:

2001 -.41F 
2002 -.46
2003 -.47
2004 -.45
2005 -.48
2006 -.42
2007 -.40
2008 -.33

The temperature, .41F, is four tenths of a degree Fahrenheit above the average of the past 150 years based on thousands of measurements of air temperature all over the globe at ground or ocean level. The peak temperature was 1998.

Isn't is strange that the Left that so firmly believes in Global Warming could never believe that George Bush was so effective in protecting the world from it. Thank you President Bush.