Year	Percent
1950	9.73914
1955	9.20917
1960	8.74426
1965	10.24846
1970	11.12277
1975	12.98004
1980	12.69917
1985	12.64533
1990	11.83611
1995	12.07022
2000	13.3193
2005	10.83695
2010	8.37999
2015	7.21724
2020	8.45554
2025	10.1967
2030	9.13698
2035	8.03151
2040	7.20907
2045	6.81266
2050	6.80891
2055	6.97978
2060	7.05977
2065	6.79422
2070	6.33524
2075	6.0024
2080	5.88774
2085	5.91434
2090	5.94859
2095	5.87655
2100	5.70564