TWRoO on 04 March 2009
Basically roughly parallel to the green line in this graph... but slightly higher, so where is shows it going down to 20k per week in the middle o the graph (which is late 2007) the PS2 will be nearer 30k-ish... and the slowdown after (2008 for GBA line, 2010 for PS2) will be more elongated.
http://vgchartz.com/hwcomps.php?cons1=Wii®1=------&cons2=PS2®2=All&cons3=GBA®3=All&start=39089&end=39789
