Which International tourism expenditure (2012) has an International tourism expenditure (2011) of $33.3 billion?
CREATE TABLE "international_tourism_expenditure_2012" (
  "rank" real,
  "country" text,
  "unwto_region" text,
  "international_tourism_expenditure_2012" text,
  "international_tourism_expenditure_2011" text
);
SELECT "international_tourism_expenditure_2012" FROM "international_tourism_expenditure_2012" WHERE "international_tourism_expenditure_2011"='$33.3 billion';