CREATE TABLE table_203_396 (id DECIMAL, "year" DECIMAL, "domestic passengers" DECIMAL, "international passengers" DECIMAL, "total passengers" DECIMAL, "change" TEXT)

what year had the greatest number of international passengers ?
SELECT "year" FROM table_203_396 ORDER BY "international passengers" DESC LIMIT 1
SELECT "year" FROM "table_203_396" ORDER BY "international passengers" DESC NULLS LAST LIMIT 1