Year	Percent
1950	11.78692
1955	11.50295
1960	10.65905
1965	11.67526
1970	12.00805
1975	12.40951
1980	12.00145
1985	11.2695
1990	11.91532
1995	13.19774
2000	12.70513
2005	12.05597
2010	11.52412
2015	10.86777
2020	10.44957
2025	9.86907
2030	9.42531
2035	8.93673
2040	8.46983
2045	8.04811
2050	7.66938
2055	7.34763
2060	7.03882
2065	6.77832
2070	6.54136
2075	6.35157
2080	6.1922
2085	6.05474
2090	5.93038
2095	5.8217
2100	5.73123