Year	Percent
1950	5.65945
1955	5.3082
1960	4.91344
1965	4.88504
1970	4.89152
1975	4.91673
1980	4.97749
1985	4.58261
1990	5.75171
1995	5.72449
2000	5.97968
2005	5.98458
2010	7.21674
2015	8.10799
2020	9.46911
2025	10.93299
2030	12.40876
2035	13.78015
2040	14.92326
2045	15.4673
2050	15.32304
2055	17.60554
2060	20.09182
2065	21.98158
2070	23.10256
2075	24.32594
2080	25.60825
2085	26.79286
2090	27.86274
2095	28.82254
2100	29.66893