I know you are big on opinions and always short on facts so I thought I would help you out. According to the CDC the number of teenage child births continues to fall. It is 72% lower than it was in 1991. The number of births to teenagers aged 15–19 was 179,871 in 2018 (out of 3,791,712 births). Doing the math, that's about 4.7% of all child births in American in 2018 were from teenage mothers.
National Vital Statistics Reports: Births: Final Data for 2018. https://www.cdc.gov/nchs/data/nvsr/nvsr68/nvsr68_13-508.pdf