How long will it take Wii's top sellers to plateau?

[polezo]

http://vgchartz.com/swlaunch.php?reg1=All&game1=Wii+Play+-+Wii&reg2=All&game2=wii+fit+-+wii&reg3=All&game3=mario+kart+wii+-+wii&weeks=150

http://vgchartz.com/swlaunch.php?reg1=All&game1=halo+3+-+x360&reg2=All&game2=Call+of+Duty+4%3A+Modern+Warfare+-+X360&reg3=All&game3=grand+theft+auto+iv+-+x360&weeks=150

 

These graphs represent the three top sellers on the Wii and 360 respectively; notice any differences? 

 

The Wii's top games simply refuse to flatten out in sales.  It has to reach a saturation point and flatten someday, but when do you think that will be?  If I were to only base it off of how similar DS games have performed, I'd say the games will continue to climb for at least another 2 years--which is astounding.  If it truly doesnt flatten, by that point the 3 combined will be pushing 90-100million total units.