CREATE TABLE table_name_48 (airport VARCHAR2, rank VARCHAR2)

What was the total number of aircrafts in 2011 for sydney airport that was ranked number 1?
SELECT COUNT(2011) FROM table_name_48 WHERE airport = "sydney airport" AND rank < 1
SELECT COUNT(2011) FROM "table_name_48" WHERE "airport" = "sydney airport" AND "rank" < 1