Year	Percent
1950	10.43653
1955	9.9479
1960	9.9919
1965	10.18207
1970	11.72927
1975	11.5886
1980	11.41583
1985	11.11219
1990	10.78983
1995	10.7311
2000	10.6843
2005	10.75359
2010	10.52175
2015	10.24842
2020	9.71529
2025	9.32835
2030	9.19401
2035	8.99833
2040	8.74799
2045	8.48728
2050	8.23363
2055	7.97333
2060	7.73208
2065	7.50791
2070	7.27726
2075	7.0364
2080	6.82079
2085	6.62357
2090	6.44783
2095	6.2843
2100	6.13119