Year	Percent
1950	17.16644
1955	16.76345
1960	16.156
1965	15.76987
1970	15.23569
1975	14.5404
1980	13.73075
1985	12.85051
1990	12.03002
1995	11.84558
2000	11.52822
2005	11.13449
2010	10.82224
2015	10.5864
2020	10.73821
2025	11.23323
2030	12.01471
2035	12.99361
2040	14.1296
2045	15.3676
2050	16.62943
2055	17.84607
2060	18.98883
2065	20.04311
2070	21.00821
2075	21.85831
2080	22.58554
2085	23.18962
2090	23.67951
2095	24.08041
2100	24.41209