Year	Percent
1950	10.37616
1955	10.19693
1960	10.04664
1965	9.82526
1970	9.89157
1975	10.1339
1980	10.42335
1985	10.47842
1990	10.9221
1995	11.20917
2000	11.11082
2005	10.94885
2010	10.9176
2015	11.15567
2020	11.2208
2025	10.84503
2030	10.56535
2035	10.4691
2040	10.37548
2045	10.20907
2050	9.97114
2055	9.71402
2060	9.49466
2065	9.29662
2070	9.10339
2075	8.86828
2080	8.63981
2085	8.42027
2090	8.21909
2095	8.02847
2100	7.83062