I changed my own flat and patched it in the garage one day, so single change, because I didn't even use the spare.
Beyond that, it's 12 changes each season, so five times since I got back from RIT. There's another 60, except this fall, add another four, because my sister's car finally got a set of dedicated snow wheels. 64, plus the single change is 65.
Plus I think another half a dozen for various leaks and flat chases over the span of several years. Call it 71, plus the 66.
So that's 137 tire removal and mountings, NOT COUNTING any tires removed for other purposes, including pads, rotors, calipers (three times), suspension, joints, axle segments, or any other purpose.