Year	Percent
1950	9.54545
1955	9.53508
1960	9.45209
1965	9.17582
1970	9.3903
1975	9.76202
1980	9.99416
1985	10.03744
1990	10.1619
1995	10.45278
2000	10.79034
2005	10.9195
2010	10.87555
2015	11.42625
2020	11.88093
2025	11.56593
2030	10.97072
2035	10.27038
2040	10.29461
2045	10.34161
2050	10.10343
2055	9.61737
2060	9.13086
2065	8.76251
2070	8.48573
2075	8.24334
2080	7.96825
2085	7.67166
2090	7.36845
2095	7.09892
2100	6.88461