Year	Percent
1950	7.47577
1955	5.54784
1960	5.51391
1965	5.31865
1970	5.01401
1975	5.41828
1980	5.26902
1985	5.71249
1990	6.708
1995	7.11049
2000	7.6642
2005	7.64884
2010	8.03041
2015	8.67333
2020	9.9372
2025	12.07156
2030	13.65359
2035	15.16056
2040	15.89796
2045	16.79303
2050	17.92846
2055	19.31182
2060	20.80354
2065	22.17821
2070	23.5091
2075	24.89164
2080	26.16799
2085	27.30694
2090	28.32577
2095	29.25339
2100	30.1015