Year	Percent
1950	7.14426
1955	6.51882
1960	7.47731
1965	8.42754
1970	7.37286
1975	7.33141
1980	7.91616
1985	7.67954
1990	6.49455
1995	5.64335
2000	5.79635
2005	5.85826
2010	5.84564
2015	5.23105
2020	4.90157
2025	4.8258
2030	4.99523
2035	5.17177
2040	5.08574
2045	4.92141
2050	4.76662
2055	4.71317
2060	4.7815
2065	4.90242
2070	4.96642
2075	4.94427
2080	4.8649
2085	4.79457
2090	4.76328
2095	4.76343
2100	4.76823