April 2009 Usage Min %

PS2 21.6%
X360 21.1%
Wii 17.6%
PS3 10.5%
Xbox 6.7%
GC 2.6%

Versus December 2008

PS2 28.3%
X360 17.4%
Wii 16.4%
Xbox 8.4%
PS3 8.1%
GC 3.3%

Link