Year	Percent
1950	4.88059
1955	4.85423
1960	4.70134
1965	4.6603
1970	4.62685
1975	4.60785
1980	4.5697
1985	4.49984
1990	4.65174
1995	4.83767
2000	4.95958
2005	5.20208
2010	5.32336
2015	5.54403
2020	5.88935
2025	6.32191
2030	6.71883
2035	7.03531
2040	7.69768
2045	9.08974
2050	11.19348
2055	13.43507
2060	15.37773
2065	17.07652
2070	18.9131
2075	20.85883
2080	22.80636
2085	24.568
2090	26.12486
2095	27.54858
2100	28.89099