Is The Mario Series Really All That Milked? (No, It's Not.)

[Deyon]

KHlover said:

With the last NSMB games before them coming out 2006 and 2008. Four games in seven years isn't "milked" in my book, even if two of those games happened to release in the same year.

Ok.

How many Games come out in a single year with the name Mario on it?