There were a few Mario titles amongst the games receiving ELSPA Sales Awards for March of this year:

Gold Award (100,000-199,999 units sold)
Mario & Sonic at the Olympic Games (NDS)

Double Platinum Award (300,000-599,999 units sold)
Mario & Sonic at the Olympic Games (Wii)

Diamond Award (600,000-1,000,000 units sold)
New Super Mario Bros.

Check out the entire list at the link below!

Link: ELSPA Sales Awards