Year	Percent
1950	11.55631
1955	11.51236
1960	12.12012
1965	12.70062
1970	13.06971
1975	13.49741
1980	13.66463
1985	13.69435
1990	14.20671
1995	14.01377
2000	13.66122
2005	13.78603
2010	14.02269
2015	14.47295
2020	14.00221
2025	12.95907
2030	12.76271
2035	12.54758
2040	12.02047
2045	11.25447
2050	10.51114
2055	9.92256
2060	9.4405
2065	9.00737
2070	8.55852
2075	8.11137
2080	7.68472
2085	7.31367
2090	7.01322
2095	6.74978
2100	6.51612