Year	Percent
1950	12.40256
1955	13.56168
1960	14.67416
1965	16.65454
1970	16.64317
1975	16.68864
1980	18.05102
1985	19.19527
1990	21.1953
1995	23.04069
2000	24.61177
2005	25.12078
2010	25.4937
2015	25.90266
2020	26.35945
2025	26.64631
2030	26.81116
2035	27.34916
2040	27.36487
2045	26.91505
2050	26.18124
2055	24.47402
2060	22.99225
2065	21.92651
2070	21.17607
2075	21.04922
2080	20.93488
2085	20.76043
2090	20.51471
2095	20.34822
2100	20.3363