@jfeldman_epi @myrabatchelder It's a long term issue, which isn't to say policy doesn't have a part in it. Most of the decline was in the 60s and 70s, and then again in the 2000s, which is interesting.
https://www.pewresearch.org/po... https://t.co/av16CmT6fU
@jfeldman_epi@myrabatcheld这是一个长期问题，并不是说政策不参与其中。大部分下降发生在60年代和70年代，然后又出现在21世纪，这很有趣。
https://www.pewresearch.org/po... https://t.co/av16CmT6fU