noone gave a shit about the wii a year after release.
They did, up til 2008, and even then it only left the public mind by 2010. A fault of Nintendo for not capitalizing on it as Apple came in and taken their casual base from the Wii to the iPhones.

2010 was the Wii's death date, no one cared after that. Around 4 years after launch.
88 millions did.
Wii got great games after year one. I think during its lifetime it only had one bad year, software-wise.
101.63 million (as of March 31, 2016)