30-35 years... They aren't Cougar Club members, and probably don't donate at all to the school at this point, they are old. But the price continues to go up and I think the total cost is close to $150 per ticket. My dad and his brothers sit in the 3 that are close to each other, and they sell 2 others that are together but up a few rows.
I don't know if this helps, but there is a little info.