Year	Percent
1950	6.21366
1955	5.81537
1960	5.30486
1965	4.92946
1970	4.64685
1975	4.44988
1980	4.3703
1985	4.33944
1990	4.87413
1995	5.10605
2000	5.12229
2005	5.05995
2010	5.27682
2015	6.88669
2020	8.34764
2025	9.09018
2030	10.21209
2035	11.57626
2040	13.46613
2045	15.64618
2050	17.48026
2055	18.9957
2060	21.22678
2065	23.79638
2070	26.39826
2075	28.66551
2080	30.39721
2085	31.96246
2090	33.41204
2095	34.77843
2100	36.08256