user: Question: What is the average attendance after week 16?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'September 4, 1983', 'Minnesota Vikings', 'L 27–21', 70087.0]
SQL:

assistant: SELECT AVG("Attendance") FROM "Table" WHERE "Week" > 16.0;