Year	Percent
1950	9.63354
1955	11.10332
1960	11.47715
1965	11.6589
1970	10.89202
1975	8.58622
1980	7.61963
1985	7.26092
1990	7.18521
1995	7.03272
2000	6.85673
2005	5.97107
2010	5.48308
2015	5.59344
2020	5.5281
2025	5.44438
2030	5.30389
2035	5.1599
2040	5.03001
2045	5.03022
2050	5.11446
2055	5.17976
2060	5.18634
2065	5.14422
2070	5.09382
2075	5.06567
2080	5.06936
2085	5.07661
2090	5.06968
2095	5.03405
2100	4.98347