Year	Percent
1950	10.41324
1955	9.8851
1960	9.25823
1965	8.92623
1970	11.0472
1975	10.58747
1980	10.39009
1985	10.25242
1990	10.55319
1995	10.92614
2000	10.80991
2005	10.79775
2010	10.53522
2015	10.45201
2020	10.83897
2025	11.22579
2030	11.13011
2035	10.8843
2040	10.73334
2045	10.62892
2050	10.49729
2055	10.31999
2060	10.09357
2065	9.84099
2070	9.59326
2075	9.35978
2080	9.14155
2085	8.9259
2090	8.70272
2095	8.48358
2100	8.2757