Year	Percent
1950	6.71906
1955	7.46834
1960	7.80163
1965	7.44352
1970	7.41079
1975	6.7645
1980	6.4615
1985	6.04517
1990	6.25261
1995	5.84812
2000	5.61187
2005	5.62969
2010	5.66114
2015	6.21
2020	7.422
2025	9.3522
2030	11.14806
2035	13.01783
2040	14.71658
2045	16.45145
2050	18.75358
2055	19.83459
2060	19.85076
2065	19.57962
2070	20.43432
2075	22.77344
2080	24.60149
2085	25.84494
2090	26.67056
2095	27.34219
2100	28.08895