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_17302440_1 (year VARCHAR, west_manila VARCHAR)
### Question:
What was the year when West Manila has a tariff increase of 6.5?
### Answer:
SELECT year FROM table_17302440_1 WHERE west_manila = "6.5"