Year	Percent
1950	4.30256
1955	4.17241
1960	4.25445
1965	4.37887
1970	4.49445
1975	4.64219
1980	4.70519
1985	4.85304
1990	5.52411
1995	5.8078
2000	6.24422
2005	6.91651
2010	8.14186
2015	9.88523
2020	11.91386
2025	14.29617
2030	16.7732
2035	18.65625
2040	20.74782
2045	23.04678
2050	25.25733
2055	27.36722
2060	29.10613
2065	30.78552
2070	32.16951
2075	33.23789
2080	34.06743
2085	34.66038
2090	35.10628
2095	35.44619
2100	35.72594