Year	Percent
1950	10.55692
1955	11.03599
1960	11.38257
1965	11.83677
1970	11.91593
1975	11.92555
1980	12.50494
1985	13.56594
1990	12.91574
1995	12.1097
2000	12.14701
2005	12.7687
2010	12.33972
2015	11.22808
2020	10.73781
2025	11.16973
2030	10.73825
2035	10.19382
2040	9.61247
2045	9.11436
2050	8.72649
2055	8.40916
2060	8.07307
2065	7.69337
2070	7.31709
2075	6.99055
2080	6.71971
2085	6.49611
2090	6.29916
2095	6.09885
2100	5.9167