"They have a 70% out of wedlock birth rate."
[Citation needed.] I'm not aware of any statistics which record births to non-married couples. While not equivalent, teenage pregnancy could be a predictor for this, and it's much higher in the US (3.4%) than in many European countries(e.g. Netherlands is 0.3%, 0.7% in Sweden and Denmark, UK 2.6%, etc.)
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