Year	Percent
1950	10.32228
1955	10.74329
1960	11.08365
1965	11.83807
1970	11.86743
1975	11.8403
1980	12.22736
1985	13.18864
1990	12.60501
1995	11.85803
2000	11.91926
2005	12.45928
2010	11.9933
2015	10.92916
2020	10.44617
2025	10.86863
2030	10.46193
2035	9.94326
2040	9.38538
2045	8.90501
2050	8.53113
2055	8.22213
2060	7.89088
2065	7.51425
2070	7.14074
2075	6.81701
2080	6.55008
2085	6.32948
2090	6.13469
2095	5.93626
2100	5.75556