Year	Percent
1950	8.63295
1955	8.38619
1960	10.82335
1965	12.00085
1970	10.35695
1975	9.59188
1980	9.41013
1985	10.43207
1990	10.26536
1995	9.52319
2000	8.76957
2005	8.38523
2010	8.34356
2015	8.33381
2020	8.55528
2025	8.90701
2030	8.26137
2035	7.78161
2040	7.49356
2045	7.38872
2050	7.34288
2055	7.24917
2060	7.02167
2065	6.72076
2070	6.42732
2075	6.21342
2080	6.07522
2085	5.94981
2090	5.80784
2095	5.63051
2100	5.44844