Year	Percent
1950	14.20869
1955	14.15587
1960	16.24703
1965	15.6894
1970	15.28683
1975	14.71802
1980	14.19505
1985	13.90905
1990	13.56355
1995	13.38724
2000	12.784
2005	12.34575
2010	11.20236
2015	10.70555
2020	10.35794
2025	9.96619
2030	9.52923
2035	9.10031
2040	8.70023
2045	8.31393
2050	7.962
2055	7.63915
2060	7.32475
2065	7.01171
2070	6.73529
2075	6.48875
2080	6.27508
2085	6.08292
2090	5.90779
2095	5.75082
2100	5.60944