Year	Percent
1950	4.99044
1955	4.56914
1960	4.29814
1965	4.20252
1970	4.21324
1975	4.30036
1980	4.3828
1985	4.4723
1990	4.84097
1995	5.06593
2000	5.26087
2005	5.45986
2010	5.58014
2015	5.48595
2020	5.55118
2025	5.74477
2030	6.04728
2035	6.39606
2040	6.80924
2045	7.29222
2050	8.00723
2055	8.9066
2060	9.94675
2065	11.01216
2070	12.15042
2075	13.33393
2080	14.61304
2085	15.95981
2090	17.31404
2095	18.65376
2100	19.97815