CREATE TABLE table_15088 ("Tournament" TEXT, "2008" TEXT, "2009" TEXT, "2010" TEXT, "2011" TEXT, "2012" TEXT)

What is the 2012 value at the Grand Slam Tournaments?
SELECT "2012" FROM table_15088 WHERE "Tournament" = 'grand slam tournaments'
SELECT "2012" FROM "table_15088" WHERE "Tournament" = 'grand slam tournaments'