Upper
Middle
Median household income in 2018
Lower
Share of US aggregate income
28,700
2018
2000
20,000
Upper
Middle
Lower
1970
2018
10%
9%
62%
43%
29%
48%
1970
28,200
28,700
58,100
81,700
86,600
1970
2000
2018
86,600
126,100
192,200
207,400
1970
2000
2018
207,400
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US
Europe
Japan
China
Population annualised growth (percentage)
20-64 working age cohort (percentage)
20-64
working age cohort
Total population (millions)
1.2
0.9
-0.1
0.8
0.4
-0.4
1.1
0.4
-0.8
2.3
1.1
-0.3
1.1
1.1
-0.3
0.4
0.5
-0.7
2.2
0.2
-1.0
1.5
1.9
-0.7
1960
1970
2020
2100
53%
53%
59%
49%
58%
56%
59%
48%
54%
60%
55%
45%
48%
45%
65%
50%
1960
1970
2020
2100
1960
1970
2020
2100
1960
1970
2020
2100
1960
1970
2020
2100
187
210
331
301
316
341
410
298
94
105
126
68
660
828
1,439
1,102