Year	Percent
1950	7.93284
1955	8.27229
1960	6.95796
1965	6.5847
1970	6.81165
1975	6.8659
1980	6.47892
1985	5.63206
1990	5.45239
1995	6.20617
2000	6.48421
2005	5.07232
2010	5.24377
2015	5.78795
2020	5.715
2025	5.84039
2030	5.80012
2035	5.5526
2040	5.34639
2045	5.36441
2050	5.47056
2055	5.53406
2060	5.51968
2065	5.43131
2070	5.31873
2075	5.25497
2080	5.25475
2085	5.27312
2090	5.25851
2095	5.1947
2100	5.10725