Japan best-selling singles

Don't ask me xD
Well, this came up while watching SDK with Makihara Noriyuki-san. I haven't finished watch the show yet..

I know 7 songs from the list, except Oyoge! Taiyaki-kun, Onna no Michi, and Dango 3 kyodai.
It's funny that Oyoge! Taiyaki-kun and Dango 3 kyoudai were sort of children songs? Cute songs^^'
If I'm not mistaken, Tsuyoshi-san sung a little part of Oyoge! Taiyaki-kun in DK?  
And Dango 3 kyoudai makes me remember of sankyoudai that consist of Yoko, Subaru, and Yasu xD

I wonder what songs would be up there if the year extended to 2010 ;)

http://en.wikipedia.org/wiki/List_of_best-selling_singles_in_Japan#Best-selling_singles_in_Japan