Year	Percent
1950	10.85416
1955	11.22519
1960	11.10323
1965	9.89572
1970	8.40848
1975	7.5454
1980	7.2286
1985	7.39414
1990	7.63357
1995	7.53175
2000	6.94688
2005	6.86934
2010	6.73994
2015	6.2047
2020	6.26562
2025	6.29413
2030	6.19159
2035	6.03617
2040	5.89451
2045	5.79948
2050	5.77054
2055	5.78663
2060	5.7675
2065	5.6921
2070	5.59671
2075	5.51685
2080	5.47671
2085	5.45569
2090	5.43373
2095	5.3923
2100	5.32727