Year	Percent
1950	14.34603
1955	14.9923
1960	15.93321
1965	16.4257
1970	16.87363
1975	19.78518
1980	19.28643
1985	17.953
1990	17.12991
1995	16.53135
2000	15.81394
2005	15.56431
2010	15.32977
2015	14.28217
2020	13.07608
2025	12.28192
2030	11.74844
2035	11.27015
2040	10.7438
2045	10.15802
2050	9.55843
2055	9.04043
2060	8.5901
2065	8.20217
2070	7.81362
2075	7.42619
2080	7.05098
2085	6.71386
2090	6.42007
2095	6.18248
2100	5.96966