唯一的依据,年轻人的人口下降。
- -12-17: 25 million (7.7%) [pop share down y-o-y]
- -18-24: 30.8 million (9.5%) [pop share down]
- -25-34: 44.7 million (13.8%) [pop share up]
- -35-44: 40.5 million (12.5%) [pop share down]
- -45-54: 42.8 million (13.2%) [pop share down]
- -55-64: 41.5 million (12.8%) [pop share up]
- -65-74: 28.6 million (8.9%) [pop share up]
- -75+: 20.6 million (6.4%) [pop share up]