Here is the evolution of the share of blue collar/white collar jobs [0] vs the evolution of fertility rate [1]. I am curious to hear your conclusions from that

Here is the evolution of the share of blue collar/white collar jobs [0] vs the evolution of fertility rate [1]. I am curious to hear your conclusions from that ! [0] https://publishing.cdlib.org/ucpressebooks/view?docId=ft158004pr&chunk.id=d0e3212&toc.depth=1&toc.id=d0e3212&brand=ucpress https://publishing.cdlib.org/ucpressebooks/view?docId=ft1580... [1] https://www.researchgate.net/figure/Historical-Trend-in-US-Total-Fertility-Rate-by-Race-1800-2007_fig8_283645175 https://www.researchgate.net/figure/Historical-Trend-in-US-T...