Year	Percent
1950	9.00686
1955	8.51939
1960	8.24034
1965	8.3115
1970	7.86645
1975	7.48074
1980	6.51672
1985	6.58986
1990	6.37108
1995	5.96063
2000	5.93769
2005	6.01247
2010	5.98651
2015	5.76126
2020	5.5503
2025	5.42935
2030	5.39151
2035	5.4084
2040	5.39829
2045	5.33426
2050	5.25323
2055	5.20068
2060	5.19407
2065	5.20974
2070	5.20393
2075	5.1636
2080	5.09776
2085	5.03185
2090	4.98808
2095	4.9547
2100	4.93586