Year	Percent
1950	11.09712
1955	11.96153
1960	13.07872
1965	13.96021
1970	14.55036
1975	15.18542
1980	15.82428
1985	16.3677
1990	18.33223
1995	17.47158
2000	16.91598
2005	17.67622
2010	19.18109
2015	20.2417
2020	21.86629
2025	23.45259
2030	25.27931
2035	26.62905
2040	27.19921
2045	27.80936
2050	28.52132
2055	29.29056
2060	29.96377
2065	30.43598
2070	31.07365
2075	31.57145
2080	32.20198
2085	32.86167
2090	33.49554
2095	34.10004
2100	34.6743