Year	Percent
1950	11.20633
1955	10.34298
1960	9.54575
1965	6.5084
1970	5.79804
1975	5.7362
1980	6.79034
1985	7.39526
1990	9.46623
1995	10.66907
2000	13.00041
2005	16.3406
2010	20.85351
2015	25.06011
2020	28.85774
2025	32.09031
2030	34.62603
2035	35.97155
2040	36.52785
2045	36.55494
2050	36.02724
2055	36.53325
2060	36.93402
2065	37.57856
2070	39.46967
2075	41.09001
2080	42.44244
2085	43.61014
2090	44.77281
2095	45.86495
2100	46.8124