Year	Percent
1950	9.41858
1955	9.97942
1960	10.73229
1965	11.8986
1970	14.5851
1975	15.72927
1980	15.85385
1985	15.77798
1990	20.8818
1995	22.60922
2000	24.03095
2005	24.25581
2010	25.87644
2015	27.86268
2020	30.11349
2025	32.44716
2030	35.43187
2035	38.29138
2040	41.02992
2045	42.96421
2050	43.45075
2055	43.49172
2060	43.5276
2065	43.51055
2070	43.88764
2075	43.72745
2080	43.21521
2085	42.65632
2090	42.33054
2095	42.22004
2100	42.28766