Year	Percent
1950	13.44392
1955	9.54801
1960	11.86194
1965	12.27985
1970	11.98108
1975	12.07896
1980	10.35634
1985	9.58925
1990	8.49938
1995	7.93377
2000	7.99234
2005	7.09924
2010	6.60873
2015	5.25244
2020	5.17005
2025	4.90812
2030	4.92659
2035	5.04345
2040	4.98076
2045	4.72362
2050	4.51533
2055	4.47794
2060	4.57369
2065	4.71173
2070	4.77882
2075	4.73203
2080	4.65382
2085	4.64185
2090	4.71471
2095	4.8148
2100	4.86679