Year	Percent
1950	5.49073
1955	5.11971
1960	5.22857
1965	5.59804
1970	5.92759
1975	6.14335
1980	6.18829
1985	6.0019
1990	6.42718
1995	6.51931
2000	6.73229
2005	6.90593
2010	7.04651
2015	7.63513
2020	8.25121
2025	9.09417
2030	9.96781
2035	10.8305
2040	12.1703
2045	14.21926
2050	16.23884
2055	18.11947
2060	19.90157
2065	21.49697
2070	23.06593
2075	24.49843
2080	25.88614
2085	27.17891
2090	28.36392
2095	29.43814
2100	30.39542