The report found that the U.S. search market has grown 55 percent from December 2004 to December 2005.
Google gained 5.7% marketshare, whereas Yahoo lost 0.3 percent and MSN even dropped 3.1 percent.
Google now has 43.1 percent of the market, Yahoo follows at 21.7 percent and MSN is third with 14.0 percent.
There are also statistics on the search engine's growth in searches. Google got 75% more search queries in December last year, Yahoo 53 percent more and MSN only 20 percent more.