Year	Percent
1950	2.64527
1955	2.93203
1960	3.91802
1965	5.04881
1970	6.65391
1975	8.05348
1980	8.82255
1985	8.71228
1990	10.56011
1995	10.35805
2000	11.49109
2005	12.61409
2010	15.47964
2015	18.37245
2020	21.89538
2025	25.72052
2030	27.9172
2035	29.07858
2040	29.31507
2045	28.67891
2050	27.72175
2055	28.68387
2060	30.01391
2065	31.25127
2070	32.33671
2075	32.54058
2080	32.82108
2085	33.28069
2090	33.94534
2095	34.59502
2100	35.04481