Year	Percent
1950	6.24652
1955	6.42672
1960	6.6622
1965	7.696
1970	7.9875
1975	7.97271
1980	8.04855
1985	8.2564
1990	10.75144
1995	10.53917
2000	11.00615
2005	11.40574
2010	12.18381
2015	13.51984
2020	15.42337
2025	17.61433
2030	19.89149
2035	22.34475
2040	24.96046
2045	28.03246
2050	31.27729
2055	34.71058
2060	37.84764
2065	39.63797
2070	40.92066
2075	41.49809
2080	43.28701
2085	44.71443
2090	45.70454
2095	46.33203
2100	46.78024