Year	Percent
1950	8.11119
1955	7.58406
1960	7.98298
1965	9.62803
1970	8.51538
1975	8.55331
1980	8.87212
1985	8.47687
1990	7.18956
1995	5.95822
2000	5.86266
2005	6.02774
2010	6.09951
2015	5.9612
2020	5.91341
2025	5.41933
2030	5.12756
2035	5.18668
2040	5.27934
2045	5.29902
2050	5.24634
2055	5.14021
2060	5.04815
2065	5.04238
2070	5.10198
2075	5.13111
2080	5.10678
2085	5.03852
2090	4.97117
2095	4.94064
2100	4.94832