Year	Percent
1950	7.40576
1955	7.25405
1960	5.5154
1965	5.52099
1970	5.47942
1975	5.51961
1980	5.58591
1985	6.25425
1990	7.88446
1995	8.61985
2000	8.74454
2005	9.41021
2010	10.19775
2015	11.21673
2020	12.55866
2025	15.00589
2030	16.82718
2035	18.90079
2040	20.11854
2045	21.59818
2050	22.9467
2055	24.57309
2060	26.05071
2065	27.34835
2070	28.59612
2075	29.89514
2080	31.07849
2085	32.13514
2090	33.0737
2095	33.8755
2100	34.5498