Year	Percent
1950	11.74476
1955	10.44669
1960	15.63756
1965	15.90112
1970	14.54044
1975	12.98575
1980	13.60198
1985	13.18619
1990	11.91514
1995	11.12568
2000	10.31418
2005	9.51824
2010	8.78055
2015	7.55214
2020	7.54407
2025	7.05171
2030	6.49302
2035	5.9879
2040	5.58655
2045	5.3055
2050	5.17414
2055	5.10995
2060	5.0029
2065	4.87593
2070	4.76571
2075	4.70899
2080	4.70134
2085	4.71855
2090	4.70902
2095	4.67367
2100	4.62769