user: Question: When was the average year that the number of floors was greater than 75?
Columns: ['Rank', 'Name', 'Height m / feet', 'Floors', 'Year']
Types: ['text', 'text', 'text', 'real', 'real']
Sample row: ['1', 'Trump Ocean Club International Hotel and Tower', '284 / 932', 70.0, 2011.0]
SQL:

assistant: SELECT AVG("Year") FROM "Table" WHERE "Floors" > 75.0;