Year	Percent
1950	9.39805
1955	8.96067
1960	9.66566
1965	9.76791
1970	10.673
1975	10.00987
1980	9.92772
1985	9.63892
1990	10.19651
1995	10.72863
2000	11.43762
2005	11.33864
2010	11.20824
2015	10.68511
2020	10.44236
2025	10.6906
2030	10.82053
2035	10.52798
2040	10.11234
2045	9.7154
2050	9.46952
2055	9.30914
2060	9.13067
2065	8.91435
2070	8.64594
2075	8.39111
2080	8.19038
2085	8.00523
2090	7.8321
2095	7.62185
2100	7.39752