Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_29538735_1 (year VARCHAR, tonnes_of_co2_saved VARCHAR)
### Question:
When 1522 is the tonnes of co2 saved what is the year?
### Answer:
SELECT year FROM table_29538735_1 WHERE tonnes_of_co2_saved = 1522