What is listed for the 2005 that has a 2012 of 4.2%?
CREATE TABLE "professional_organizations" (
  "favorite_professional_sport" text,
  "2005" text,
  "2008" text,
  "2011" text,
  "2012" text
);
SELECT "2005" FROM "professional_organizations" WHERE "2012"='4.2%';