Show the average, minimum, and maximum ticket prices for exhibitions for all years before 2009.
SELECT avg(ticket_price) ,  min(ticket_price) ,  max(ticket_price) FROM exhibition WHERE YEAR  <  2009
SELECT avg(ticket_price) ,  min(ticket_price) ,  max(ticket_price) FROM exhibition WHERE YEAR  <  2009
[{'avg(ticket_price)': 20.35, 'min(ticket_price)': 14.95, 'max(ticket_price)': 29.95}]