Year	Percent
1950	9.2619
1955	8.83361
1960	9.51138
1965	9.58851
1970	10.61859
1975	9.9648
1980	9.77606
1985	9.39257
1990	9.94853
1995	10.52869
2000	11.31811
2005	11.35144
2010	11.12669
2015	10.52286
2020	10.27628
2025	10.54555
2030	10.69153
2035	10.41774
2040	10.00965
2045	9.61616
2050	9.36694
2055	9.2006
2060	9.01391
2065	8.7803
2070	8.49637
2075	8.22738
2080	8.01099
2085	7.81047
2090	7.62312
2095	7.40289
2100	7.17427