The search giant's market share among home, work and university Internet users climbed from 42.7 percent to 43.1 percent from March to April of this year--up from 36.5 percent in April 2005, ComScore said Monday.

In second place, Yahoo saw its market share hold steady at 28 percent between March and April, a decrease of 2.7 percent from last year. Less than 6 percentage points separated Google's and Yahoo's respective market shares in April 2005.

Read more at: Google retains lead in U.S. search market