66.
The list of cars may be off in the early years. Some of them were memorable only for their trouble:

1960 Triumph (Never did get used to the stick, didn't have it long)
1964 Volkswagen 1500 (A twin-carb lemon that spent more time in the shop than on the road)
1966 Oldsmobile Cutlass
1972 Toyota Corolla (New, was totaled a year later)
1970 Buick (Skylark?)
1975 Toyota Celica (New, sporty little car)
1981 Toyota Corolla (New, fire-engine red wagon)
1988 Isuzu Trooper (New, my first 4WD)
1996 Jeep Cherokee Country (New, actually took it off-road)
2003 Jeep Grand Cherokee Laredo (New, more of a road car than the Cherokee)
2016 Toyota 4Runner SR5 Premium