What is the 2012 that has tournament played as the tournament?
CREATE TABLE "doubles_statistics" (
  "tournament" text,
  "2006" text,
  "2007" text,
  "2008" text,
  "2009" text,
  "2010" text,
  "2011" text,
  "2012" text
);
SELECT "2012" FROM "doubles_statistics" WHERE "tournament"='tournament played';