CREATE TABLE table_13836704_4 (aircraft_movements_2009 INT, change_2008_09 VARCHAR)

what is the maximum aircraft movements 2009 with change 2008/09 being 18.2%
SELECT MAX(aircraft_movements_2009) FROM table_13836704_4 WHERE change_2008_09 = "18.2%"
SELECT MAX("aircraft_movements_2009") FROM "table_13836704_4" WHERE "18.2%" = "change_2008_09"