Year	Percent
1950	9.12758
1955	10.07763
1960	8.72679
1965	9.69261
1970	10.86402
1975	10.74651
1980	11.71434
1985	10.75185
1990	10.1486
1995	9.79484
2000	9.7821
2005	9.96635
2010	9.95567
2015	9.42448
2020	7.9903
2025	7.16875
2030	7.11632
2035	7.1522
2040	7.07158
2045	6.68557
2050	6.15712
2055	5.73922
2060	5.55802
2065	5.56778
2070	5.59977
2075	5.53477
2080	5.3794
2085	5.21569
2090	5.12272
2095	5.12114
2100	5.15583