Year	Percent
1950	7.33873
1955	7.66912
1960	7.84193
1965	6.91138
1970	6.50352
1975	8.26585
1980	9.34022
1985	9.9047
1990	12.53824
1995	13.79859
2000	15.13063
2005	17.02146
2010	20.3415
2015	23.75961
2020	27.09991
2025	31.30702
2030	34.91986
2035	38.09174
2040	39.21891
2045	39.10794
2050	37.81961
2055	38.22406
2060	39.37316
2065	40.13507
2070	40.4665
2075	40.82417
2080	41.01545
2085	41.55014
2090	42.4774
2095	43.25417
2100	43.64858