Year	Percent
1950	10.30842
1955	10.61194
1960	10.68768
1965	9.48519
1970	9.73682
1975	9.95694
1980	10.0548
1985	10.17797
1990	10.53081
1995	10.91199
2000	11.0133
2005	10.57687
2010	10.16502
2015	10.65685
2020	11.03842
2025	10.8771
2030	10.49196
2035	10.25801
2040	10.09095
2045	9.93488
2050	9.72552
2055	9.47422
2060	9.18879
2065	8.91078
2070	8.65264
2075	8.3981
2080	8.16352
2085	7.91429
2090	7.66167
2095	7.41741
2100	7.17397