Year	Percent
1950	6.79982
1955	6.78791
1960	7.26105
1965	8.02477
1970	8.5777
1975	9.07744
1980	9.44051
1985	9.61255
1990	11.40778
1995	11.86773
2000	12.9393
2005	14.31774
2010	16.06573
2015	18.27676
2020	20.41245
2025	24.96689
2030	29.36473
2035	33.09282
2040	34.09024
2045	34.88192
2050	36.6319
2055	37.49191
2060	37.88301
2065	37.6822
2070	37.36966
2075	37.69693
2080	38.0893
2085	38.39891
2090	38.5394
2095	38.6347
2100	38.77605