Year	Percent
1950	3.84323
1955	3.92189
1960	3.9706
1965	3.95584
1970	3.92084
1975	3.88502
1980	3.8872
1985	3.96682
1990	4.39887
1995	4.56029
2000	4.579
2005	4.59983
2010	4.66161
2015	4.74036
2020	4.82414
2025	4.89577
2030	4.99252
2035	5.18588
2040	5.50885
2045	5.86878
2050	6.31622
2055	6.90445
2060	7.60581
2065	8.2684
2070	8.90766
2075	9.63445
2080	10.43247
2085	11.25961
2090	12.09429
2095	12.9522
2100	13.8342