Below is the latest U.S. search volume breakdown for the top search engines. Google continues to grow its search volume to north of 63 percent for all executed searches in the U.S, but down very slightly in comparison to the lucrative month of December. During that same timeframe MSN Search is showing a gain of 5% in search volume.

I’ve updated our custom category of top Google properties to contain YouTube. Here’s a new chart of the combined market share for the top properties each for Google, Yahoo! and MSN.