born.csv
包含了**从1949年到2022年的出生人数。
- 0-20岁为青年儿童
- 20-60岁为工作人群
- 60岁以上为老年人群
- 新生儿数量将从2023年开始每年减少5%,直到每年达到500万。
- 人们的平均寿命为78岁。(有些人会早逝,有些人会长寿,但平均值为78岁。)
- 不考虑人口迁移,因为**有严格的迁移政策。
- 不考虑1949年以前出生的人,他们不会影响趋势。
main.py
计算和预测**人口老龄化情况。
各年龄段人口数走势图
人口结构占比走势图
人口平均年龄走势图
**人口预测
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