Year	Percent
1950	9.90263
1955	9.32482
1960	6.9163
1965	8.22984
1970	9.23648
1975	8.4664
1980	6.39697
1985	8.60013
1990	8.40018
1995	8.61645
2000	7.79627
2005	7.96161
2010	5.85605
2015	5.472
2020	5.32885
2025	5.48343
2030	5.1835
2035	5.09318
2040	5.00511
2045	4.92301
2050	4.92273
2055	5.0016
2060	5.04366
2065	5.03333
2070	5.01658
2075	5.00338
2080	5.01395
2085	5.03891
2090	5.05731
2095	5.04109
2100	5.00778