What year did deputy prime minister Mariano Rajoy Brey take office?
CREATE TABLE "list_of_deputy_prime_ministers_of_spain" (
  "deputy_prime_minister" text,
  "took_office" real,
  "left_office" text,
  "prime_minister" text,
  "term" text,
  "party" text
);
SELECT SUM("took_office") FROM "list_of_deputy_prime_ministers_of_spain" WHERE "deputy_prime_minister"='mariano rajoy brey';