CREATE TABLE table_16066063_1 (city_1 VARCHAR2)

How many passengers (in millions) flew from Seoul in 2012?
SELECT 2012 AS _passengers__in_millions_ FROM table_16066063_1 WHERE city_1 = "Seoul"
SELECT 2012 AS "_passengers__in_millions_" FROM "table_16066063_1" WHERE "Seoul" = "city_1"