1984 Hyundai Elantra, maroon
1990 Daewoo Prince, black
1994 Eagle Vision TSi, silver-blue
2005 Subaru Impreza RS, white
I've been driving since 1995 (I didn't bother to get licensed till my senior year

), but I didn't buy a car (the Hyundai) until the last year of my military service, which was mid-2000. So that's either about 0.33 cars/yr or 0.57 cars/yr depending on how you look at it.