Year	Percent
1950	9.73895
1955	9.74886
1960	9.82013
1965	9.7987
1970	9.74981
1975	9.53841
1980	9.64977
1985	9.88551
1990	10.42096
1995	10.73858
2000	10.9372
2005	10.7107
2010	10.66701
2015	10.92115
2020	11.09561
2025	11.19324
2030	10.7238
2035	10.3693
2040	10.02436
2045	9.70388
2050	9.34847
2055	8.98321
2060	8.61743
2065	8.27767
2070	7.97512
2075	7.67588
2080	7.4121
2085	7.16295
2090	6.93974
2095	6.73891
2100	6.5682