What year did deputy prime minister Mariano Rajoy Brey take office?
CREATE TABLE table_name_9 (
    took_office INTEGER,
    deputy_prime_minister VARCHAR
)
SELECT SUM(took_office) FROM table_name_9 WHERE deputy_prime_minister = "mariano rajoy brey"
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 year did deputy prime minister Mariano Rajoy Brey take office? ### Input: CREATE TABLE table_name_9 (
    took_office INTEGER,
    deputy_prime_minister VARCHAR
) ### Response: SELECT SUM(took_office) FROM table_name_9 WHERE deputy_prime_minister = "mariano rajoy brey"