Year	Percent
1950	9.63441
1955	11.04718
1960	11.00583
1965	10.57635
1970	9.26188
1975	8.70457
1980	8.09605
1985	8.37765
1990	8.4433
1995	7.23059
2000	5.73283
2005	4.874
2010	5.24517
2015	5.74806
2020	5.88218
2025	5.96667
2030	5.65612
2035	5.23755
2040	5.14713
2045	5.38505
2050	5.64018
2055	5.71245
2060	5.57265
2065	5.34013
2070	5.21254
2075	5.27377
2080	5.41948
2085	5.4932
2090	5.42229
2095	5.274
2100	5.15725