Year	Percent
1950	9.11879
1955	8.98045
1960	9.11497
1965	8.66671
1970	7.55952
1975	8.02605
1980	7.57522
1985	8.29452
1990	8.46243
1995	6.3178
2000	4.5444
2005	4.99235
2010	5.90644
2015	5.66923
2020	5.52076
2025	5.27087
2030	4.87861
2035	4.75562
2040	5.06425
2045	5.4077
2050	5.46621
2055	5.29966
2060	5.08468
2065	4.97165
2070	5.04436
2075	5.21385
2080	5.32044
2085	5.27006
2090	5.1167
2095	4.98898
2100	4.96052