Year	Percent
1950	12.8268
1955	12.87217
1960	13.31598
1965	13.70023
1970	14.14202
1975	14.39109
1980	14.74215
1985	14.84902
1990	14.40103
1995	13.81832
2000	13.39962
2005	13.59042
2010	13.65024
2015	14.27969
2020	14.09947
2025	13.14395
2030	12.6293
2035	12.40389
2040	12.20935
2045	11.83732
2050	11.31836
2055	10.82398
2060	10.42234
2065	10.07053
2070	9.73569
2075	9.35834
2080	8.96938
2085	8.61056
2090	8.28031
2095	7.99414
2100	7.69901