Year	Percent
1950	15.05385
1955	15.21247
1960	15.88671
1965	15.43085
1970	15.16418
1975	14.85228
1980	13.55534
1985	13.59766
1990	13.87816
1995	13.52512
2000	12.73062
2005	12.0185
2010	10.62866
2015	10.04787
2020	9.41188
2025	9.07422
2030	8.58687
2035	8.01852
2040	7.4809
2045	7.05212
2050	6.69826
2055	6.4042
2060	6.13041
2065	5.8694
2070	5.64002
2075	5.47004
2080	5.3245
2085	5.19029
2090	5.08046
2095	4.99702
2100	4.93253