How many miles is a 2000 year car supposed to have?

How many miles is a 2000 year car supposed to have?
The accumulated mileage on used cars is said to be 'average' if it is between 12 thousand (on the low end) to 15 thousand (on the high end) a year. That would mean the average mileage for the 2000 model year would run between 108,000 and 135,000 miles on the odometer.