Year	Percent
1950	6.57269
1955	5.79304
1960	5.2536
1965	4.98548
1970	4.87291
1975	4.93389
1980	5.01182
1985	5.07586
1990	5.61581
1995	5.77489
2000	5.99667
2005	6.34984
2010	6.51281
2015	6.63614
2020	7.15565
2025	7.91875
2030	8.73945
2035	9.5944
2040	10.63838
2045	11.95225
2050	13.61735
2055	15.20346
2060	16.5624
2065	17.5489
2070	18.89693
2075	20.55718
2080	22.1733
2085	23.61887
2090	24.89793
2095	26.11138
2100	27.35884