Not only would many of these children be parents, some would even be grandparents (therefore, it's not inconceivable to say that the actual number of unborn Americans is over 80 million).
It's also worth noting that programs like Social Security and Medicaid would be TOTALLY SOLVENT had America not murdered a generation of taxpayers and consumers.
I've been (literally) preaching that since 1992--the time that the first Aborted Generation would have reached adulthood.