Year	Percent
1950	25.99893
1955	24.95242
1960	24.2878
1965	28.94108
1970	34.33076
1975	28.34737
1980	27.3748
1985	27.82585
1990	26.78392
1995	27.4566
2000	24.03192
2005	24.28868
2010	22.21457
2015	21.07039
2020	21.71692
2025	23.14832
2030	25.24082
2035	25.55724
2040	25.32587
2045	24.87407
2050	24.17649
2055	23.40313
2060	22.88354
2065	22.34029
2070	21.53558
2075	20.56486
2080	19.67628
2085	19.01347
2090	18.60802
2095	18.32269
2100	18.04935