82k and top 5% for RDU -- seems roughly accurate, not counting award travel or flights on KE/AF flight numbers.

The top 3 cities is the random generator for me:

NYC (100% my #1 especially if including connections)
AUS (only been once this year)
BKK (only been once this year and DL doesn't actually fly there, KE was the last leg so that one is really odd)

I've had a lot of one-offs this year but been to LHR twice, SFO twice, and BOS twice so you'd think those would rank higher than AUS/BKK