If you go to the Bureau of Labor Statistics, Division of Labor Force Statistics you should be able to look up all that information.
I will tell you this however, in 1989 there were 6,000 women technicians out of a total of 880,000 technicians. By 2001 that number had doubled to 13,000 out of 817,000 technicians.
As far as pay ranges; Median hourly earnings of automotive service technicians and mechanics,
including commission, were $13.70 in 2000. The middle 50 percent earned between
$9.86 and $18.67 an hour. The lowest 10 percent earned less than $7.59, and the
highest 10 percent earned more than $23.67 an hour.
Women are still only about 2% of the automotive technicians today.
〉 Answered on Nov 16th, 2006 by Lori Johnson, Owner and Instructor at Ladies Start Your Engines