Hmm, tough question, since riding my first non-carnie coaster in 1984, I think i have ridden a coaster just about every summer. The only years that I'm not sure about are '91 and '94. Money was really tight back then so park trips were the first on the chopping block. '91 was the summer before my sis went to college so I dont think we took a family trip that year. And '94 was after my first year in college so i was working the entire summer. But those are the only ones where I didnt at least get to Great America.
lata,
jeremy