Year	Percent
1950	10.24432
1955	10.63284
1960	11.14864
1965	11.92762
1970	13.14643
1975	14.06394
1980	13.41469
1985	14.44051
1990	17.82285
1995	19.49823
2000	21.42675
2005	22.39932
2010	24.25755
2015	26.00712
2020	28.24911
2025	31.24938
2030	34.2631
2035	36.86048
2040	38.149
2045	38.37318
2050	38.1101
2055	37.67792
2060	37.13972
2065	36.83919
2070	36.8861
2075	36.8242
2080	36.82247
2085	36.88892
2090	37.05611
2095	37.33944
2100	37.68793