CREATE TABLE "2011_statistics_at_least_1_000_000_passe" (
  "country" text,
  "airport" text,
  "city" text,
  "2011" real,
  "change_11_10" text
);

Question: Which 2011 has an Airport of bole international airport?
SQL: SELECT MAX("2011") FROM "2011_statistics_at_least_1_000_000_passe" WHERE "airport"='bole international airport';