Year	Percent
1950	6.71096
1955	6.36465
1960	6.10641
1965	6.01292
1970	5.84193
1975	5.7208
1980	5.69675
1985	5.57784
1990	5.80225
1995	5.60278
2000	5.47475
2005	5.62666
2010	5.87021
2015	6.20602
2020	6.67769
2025	7.29021
2030	7.92848
2035	8.69757
2040	9.63014
2045	10.71904
2050	12.20204
2055	14.00641
2060	15.68056
2065	17.11874
2070	18.53375
2075	20.32013
2080	22.05443
2085	23.67789
2090	25.16888
2095	26.55638
2100	27.87874