I rode my first century in '78 and have not kept track but several hundred centuries since then.
I do actually keep track of double centuries though. I had 14 before I moved to SoCal (from Missouri) and have added 76 since moving here in '95. My first double was '82 and I've ridden one triple, in '85.
Rando events, yes, back in the 90's since I rode P-B-P in '91. Only one since then!
Rick / OCRR