Year	Percent
1950	14.13074
1955	19.64831
1960	19.49791
1965	18.0932
1970	15.97306
1975	15.877
1980	14.26299
1985	13.61264
1990	12.80264
1995	12.36862
2000	10.60064
2005	9.06965
2010	8.04587
2015	7.98512
2020	7.4183
2025	6.79193
2030	6.23148
2035	5.78871
2040	5.47985
2045	5.32698
2050	5.2383
2055	5.1028
2060	4.94827
2065	4.81644
2070	4.74855
2075	4.73758
2080	4.75348
2085	4.74554
2090	4.70804
2095	4.66156
2100	4.62779