Despite all the "AKcHUaLLy" comments this is probably true.
If the body has 206 bones and the global average is like 205.7, a bone that is even partially complete is still a bone, and it is probably so close to 206 that the missing parts are negligible and distributed across the skeleton anyway. Think about it, how many people do you know that are missing an appendage or a bone by defect? I bet it's less than 0.5% of everyone you know.
That is a lot of missing bones. How many people would you estimate that you know though? I went to a small high school and I bet out of 500 total I knew 300 just from school. There are lots of family and coworkers and stuff that drive that number pretty high even if you know some amputees.