Year	Percent
1950	8.01419
1955	5.85245
1960	10.93816
1965	11.35732
1970	13.24875
1975	12.78578
1980	9.10876
1985	8.21733
1990	7.2683
1995	7.01874
2000	6.46103
2005	6.21637
2010	4.98501
2015	3.58156
2020	3.81921
2025	3.95672
2030	4.66127
2035	4.87608
2040	4.80623
2045	4.23153
2050	3.91332
2055	4.01813
2060	4.38039
2065	4.74951
2070	4.94151
2075	4.87718
2080	4.67159
2085	4.55168
2090	4.6102
2095	4.77191
2100	4.89286