You sure? I think it might be lower considering lost limbs and so. Pregnancies would raise it but pregnancy is temporary while lost limbs tend to be permanent.
I think we can assume some number above 0.1% to 1% of humans are pregnant at any given time, based on the number of births last year over a 9 month period divided by the number of people on earth total, but with the assumption that many aren't carried to full term and end in loss of viability.
Each of those can have over 300 bones total, later on a lot of those would fuse so to create a full skeleton we should just consider it as 206.
Amputees numbered 57.7 Million people worldwide in 2017 or 0.8% but the vast majority of these are missing less than a single limb and retain most of their bones.