Year	Percent
1950	9.94502
1955	10.50052
1960	11.49095
1965	12.75664
1970	14.32976
1975	13.48467
1980	11.72282
1985	10.11259
1990	9.21956
1995	9.32212
2000	9.75252
2005	9.04533
2010	8.02468
2015	7.29838
2020	6.53487
2025	6.70167
2030	6.67917
2035	6.4894
2040	6.30662
2045	6.09616
2050	5.92543
2055	5.82793
2060	5.76416
2065	5.66737
2070	5.52722
2075	5.38708
2080	5.28533
2085	5.22242
2090	5.18629
2095	5.15275
2100	5.10827