I have 63,566 miles and 246 fuel ups for my primary driver since September of 2008 when I started using Fuelly. The car has 244,000 miles on it and I religiously tracked my mileage prior to Sept. 2008 but didn't keep the records.
My wife's car has 26,977 miles and 108 fuel ups tracked on Fuelly, but she misses about half of her fill ups.
Together they account for over 90,000 miles and 350 fuel ups. In the last year I've changed work locations so my daily commute has been cut almost in half from 92 miles round trip down to 52 so my average mileage has decreased due to more city driving for my commute and my miles tracked per year and fuel ups have decreased by almost half as well.