Year	Percent
1950	14.31157
1955	15.67104
1960	16.6806
1965	16.33384
1970	14.52182
1975	13.47176
1980	12.5006
1985	11.98224
1990	11.83905
1995	10.76474
2000	8.92875
2005	7.1131
2010	5.91626
2015	5.87623
2020	5.69654
2025	5.59567
2030	5.33067
2035	4.88218
2040	4.46994
2045	4.31577
2050	4.35544
2055	4.38189
2060	4.31764
2065	4.17378
2070	4.02956
2075	3.97579
2080	4.02935
2085	4.12028
2090	4.1728
2095	4.1567
2100	4.10202