Year	Percent
1950	8.30185
1955	7.76938
1960	8.1982
1965	9.89611
1970	8.72584
1975	8.76842
1980	9.13431
1985	8.74726
1990	7.42359
1995	6.14763
2000	6.03761
2005	6.21189
2010	6.2813
2015	6.14346
2020	6.09263
2025	5.57637
2030	5.26715
2035	5.31632
2040	5.40074
2045	5.41632
2050	5.35734
2055	5.24349
2060	5.14333
2065	5.1306
2070	5.18619
2075	5.21272
2080	5.1869
2085	5.11693
2090	5.048
2095	5.01671
2100	5.02431