What was the total number of aircrafts in 2011 for sydney airport that was ranked number 1?
CREATE TABLE table_9684 (
    "Rank" real,
    "Airport" text,
    "Location" text,
    "2011" real,
    "2010" real,
    "2009" real
)
SELECT COUNT("2011") FROM table_9684 WHERE "Airport" = 'sydney airport' AND "Rank" < '1'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What was the total number of aircrafts in 2011 for sydney airport that was ranked number 1? ### Input: CREATE TABLE table_9684 (
    "Rank" real,
    "Airport" text,
    "Location" text,
    "2011" real,
    "2010" real,
    "2009" real
) ### Response: SELECT COUNT("2011") FROM table_9684 WHERE "Airport" = 'sydney airport' AND "Rank" < '1'