user: Question: What was the average election year that has less than 136 deputies, and 1,560,753 votes received?
Columns: ['Election date', 'Party leader', 'Number of votes received', 'Percentage of votes', 'Number of deputies']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1964.0, 'Habib Bourguiba', '1,255,153', '100%', 101.0]
SQL:

assistant: SELECT AVG("Election date") FROM "Table" WHERE "Number of deputies" < 136.0 AND "Number of votes received" = '1,560,753';