user: ### NOW ANSWER:
Question: How many years have less than 28505 attendance?
Columns: ['Year', 'Opponent', 'Competition', 'Score', 'Venue', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text', 'real']
Sample row: [1951.0, 'South Sydney Rabbitohs', 'NSWRFL', '14-42', 'Sydney Sports Ground', 28505.0]
SQL:

assistant: SELECT AVG("Year") FROM "Table" WHERE "Attendance" < 28505.0;