CREATE TABLE table_203_436 (id DECIMAL, "year" DECIMAL, "competition" TEXT, "venue" TEXT, "position" TEXT, "notes" TEXT)

what 's the difference in meters between the 2004 and 2009 competitions ?
SELECT (SELECT "notes" FROM table_203_436 WHERE "year" = 2004) - (SELECT "notes" FROM table_203_436 WHERE "year" = 2009)
SELECT (SELECT "notes" FROM "table_203_436" WHERE "year" = 2004) - (SELECT "notes" FROM "table_203_436" WHERE "year" = 2009)