Year	Percent
1950	16.62737
1955	14.98558
1960	14.33906
1965	14.70588
1970	14.14784
1975	15.08996
1980	16.2208
1985	15.99732
1990	14.7013
1995	14.1437
2000	13.81637
2005	13.39796
2010	13.32152
2015	13.17734
2020	12.44336
2025	11.52622
2030	10.91866
2035	10.52425
2040	10.18363
2045	9.76049
2050	9.28122
2055	8.78045
2060	8.3503
2065	7.97556
2070	7.65695
2075	7.33553
2080	7.01026
2085	6.69096
2090	6.40236
2095	6.1504
2100	5.94934