Which Rank that has a Total Passengers of 15,499,462?
CREATE TABLE "brazil_s_20_busiest_airports_by_passenge" (
  "rank" real,
  "location" text,
  "total_passengers" real,
  "annual_change" text,
  "capacity" real,
  "capacity_in_use" text
);
SELECT COUNT("rank") FROM "brazil_s_20_busiest_airports_by_passenge" WHERE "total_passengers"='15,499,462';