From BMW Group PressClub USA:

The MINI brand also had a very successful May. Sales climbed to 26,104 vehicles (prev. yr. 18,849) – an increase of 38.5% over the same period last year. The number of MINI vehicles through May rose this year to 110,802 (prev. yr. 86,100/ +28.7%) vehicles. The MINI Countryman has now been launched in all markets and is expected to boost MINI to a record sales year in 2011.

May 2011 May 2010 change year-to-date 2011 year-to-date 2010 change
26,104 18,849 38.5% 110,802 86,100 28.7%

See all MINI sales worldwide by month.