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Originally Posted by Kelzie  You have to take out the increase from the immigant population though. From what I've seen, our birth rate is fairly stable. |
The US fertility rate has shown some variation. We'd expect that given women in developed nations have tended to postpone child-bearing. Also we have to control for specific variables (e.g. income inequality tends to impact on adolescent pregnancy rates).
Has the post-war rate exceeded the replacement rate of 2.1?