Year	Percent
1950	6.6908
1955	5.33733
1960	4.74264
1965	4.50549
1970	4.98619
1975	5.04803
1980	5.18149
1985	5.24502
1990	5.74917
1995	5.86259
2000	6.2887
2005	7.08668
2010	7.8784
2015	9.12644
2020	10.67821
2025	12.26772
2030	13.80062
2035	15.44209
2040	17.23551
2045	19.91233
2050	23.11908
2055	26.13342
2060	28.34987
2065	29.75261
2070	30.66055
2075	31.53891
2080	32.52046
2085	33.53416
2090	34.39455
2095	35.01088
2100	35.44561