Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_80 (year INTEGER, attendance INTEGER)
### Question:
How many years have less than 28,505 attendance?
### Answer:
SELECT AVG(year) FROM table_name_80 WHERE attendance < 28 OFFSET 505