user: Question: What was the year when West Manila has a tariff increase of 6.5?
Columns: ['Year', 'West Manila', 'East Manila', 'Consumer Price Index (2005=100)', 'West Manila as a share of 1996 real tariff', 'East Manila as a share of 1996 real tariff']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1996.0, '8.6', '8.6', '60.6', '100%', '100%']
SQL:

assistant: SELECT "Year" FROM "Table" WHERE "West Manila" = '6.5';