What 2007 has 236 for 2006?
CREATE TABLE "doubles_statistics" (
  "tournament" text,
  "2006" text,
  "2007" text,
  "2008" text,
  "2009" text,
  "2010" text,
  "2011" text,
  "2012" text
);
SELECT "2007" FROM "doubles_statistics" WHERE "2006"='236';