Year	Percent
1950	8.36163
1955	6.60584
1960	5.99019
1965	6.14984
1970	6.89912
1975	8.00473
1980	7.80882
1985	8.6915
1990	11.32546
1995	13.18879
2000	14.37273
2005	15.31424
2010	16.37898
2015	18.58565
2020	20.68567
2025	22.69376
2030	24.69776
2035	26.48367
2040	28.50168
2045	30.83292
2050	33.02588
2055	34.77278
2060	35.43579
2065	35.68067
2070	35.50542
2075	35.61377
2080	35.89394
2085	36.22329
2090	36.4758
2095	36.61674
2100	36.74249