Let's think about this. Barbie has been around since 1959. Since then she has changed in hair color and ethnicity. She's been pregnant, a paraplegic, several celebrities and almost every occupation known to mankind. She's even been president.
So what's your guess? 500? 750? 1,000? I'll save you the trouble ---I still don't know. According to doll enthusiast, Mary Wernke, there were 2,386 made between Barbie's beginning in 1959 through 1999. That's a lot of dolls and 9 years are remaining to make Wernke's list current. I must keep that in mind when my familly complains about the number of dolls I've collected.
Check Mary's site for her exhaustive lists! Happy collecting!