Year	Percent
1950	7.95315
1955	8.89715
1960	12.36658
1965	13.938
1970	15.01023
1975	12.84214
1980	10.75806
1985	9.82066
1990	10.3689
1995	11.4457
2000	10.41144
2005	7.70105
2010	6.49922
2015	6.71013
2020	7.92601
2025	7.19173
2030	6.16771
2035	5.59406
2040	5.55286
2045	5.64084
2050	5.59453
2055	5.42473
2060	5.20555
2065	5.06668
2070	5.05359
2075	5.09442
2080	5.10701
2085	5.06511
2090	4.98738
2095	4.91664
2100	4.88687