Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What year did deputy prime minister Mariano Rajoy Brey take office?

### Inputs:
table_name: table, columns: ['Deputy Prime Minister', 'Took office', 'Left office', 'Prime Minister', 'Term', 'Party']

### Response:
SELECT SUM Took office FROM table WHERE Deputy Prime Minister = mariano rajoy brey