Year	Percent
1950	16.26743
1955	16.18457
1960	16.6358
1965	16.94973
1970	17.08068
1975	17.32026
1980	17.19379
1985	16.75821
1990	15.90404
1995	14.99155
2000	14.57854
2005	13.18478
2010	12.64511
2015	12.87944
2020	12.47287
2025	11.70999
2030	10.91701
2035	10.33608
2040	9.84795
2045	9.35815
2050	8.82187
2055	8.30772
2060	7.83917
2065	7.41587
2070	7.07483
2075	6.77913
2080	6.50931
2085	6.27168
2090	6.05822
2095	5.87884
2100	5.72601