Upvote:1
You can't expect any stable shape of the distribution throughout the Bronze Age. Just look at the distribution of age in the recent 110 years:
They're completely different in 1910, 2005, and 2025 (projected). The Bronze Age lasted for thousands of years and things were at least as unsafe and unstable as during the 20th century. You may get some reasonable idea if you take any distribution relevant for the contemporary eras and divide all ages by 3 or so.