Here's something interesting. We don't have the full picture. States do NOT have to report their abortion numbers. I'm guessing that the numbers we've been fed understate the actual numbers done. Also, we are only one nation.
Estimates for the number of world wide abortions is huge. And just like climate change, may be based on models rather than verifiable evidence.
https://www.cdc.gov/reproductivehealth/data_stats/abortion.htm
https://abort73.com/abortion_facts/worldwide_abortion_statistics/