Year	Percent
1950	4.32473
1955	4.08958
1960	3.92577
1965	3.868
1970	3.55801
1975	3.5617
1980	3.66211
1985	4.01642
1990	4.82
1995	4.77841
2000	4.6827
2005	5.00604
2010	5.71944
2015	6.63114
2020	7.40127
2025	8.78284
2030	9.85869
2035	10.92257
2040	12.00515
2045	13.42186
2050	15.20505
2055	16.50617
2060	17.8416
2065	19.00185
2070	20.55157
2075	21.89003
2080	23.21543
2085	24.50748
2090	25.78544
2095	27.06661
2100	28.32076