Year	Percent
1950	12.75722
1955	12.33998
1960	11.99488
1965	12.07037
1970	12.11866
1975	11.96601
1980	11.69199
1985	11.22822
1990	10.72067
1995	11.62865
2000	13.06719
2005	14.4862
2010	16.27306
2015	17.82619
2020	19.6364
2025	22.12731
2030	24.47608
2035	26.14162
2040	26.99044
2045	26.98552
2050	26.81293
2055	26.52332
2060	26.19294
2065	25.78006
2070	25.08641
2075	24.36995
2080	23.72225
2085	23.23472
2090	22.86471
2095	22.5758
2100	22.30512