Year	Percent
1950	15.75039
1955	15.9569
1960	16.15539
1965	16.23452
1970	16.14661
1975	15.75468
1980	15.20914
1985	14.53933
1990	13.7958
1995	13.83279
2000	13.7918
2005	13.69619
2010	13.5902
2015	13.36373
2020	13.51507
2025	14.02131
2030	14.80905
2035	15.73531
2040	16.70008
2045	17.71406
2050	18.75823
2055	19.74354
2060	20.65443
2065	21.44597
2070	22.09998
2075	22.65395
2080	23.10009
2085	23.45839
2090	23.74154
2095	23.96158
2100	24.13559