美国生育率降至百年来最低水平
根据美国疾控中心国家卫生统计中心的最新数据显示，美国的生育率降至了百年来的最低水平。以下是详细的数据：
- 2023年约有360万婴儿出生，15-44岁的女性每千人生育了54.4个活产婴儿。
- 与2022年相比，2023年的生育数量下降了3%，创下了新低。
- 在2022年至2023年期间，大多数年龄段的生育率都略有下降。
- 青少年生育率创下了新低，15-19岁的女性每1000人生育了13.2个孩子，比1991年以来的最高值低了79%。
- 高龄母亲的生育率最高，下降幅度较小，其中30-34岁的女性每1000人生育了95个孩子。
- 40岁及以上的女性是唯一生育率上升的年龄段，每1000人生育不到13个孩子。
这些数据显示出美国生育率的下降趋势，不同年龄段的生育率也呈现出一定的变化。
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