Year annual % growth 1966 4.018476913957912 1967 6.3055047260200325 1968 5.263158237001321 1969 5.436510425024224 1970 4.892735978581129 1971 1.2917082141163263 1972 5.80943113460566 1973 3.9169660943608022 1974 4.832477829270829 1975 1.2292531357633436 1976 1.335768548361571 1977 1.3181511573743308 1978 3.7847427202111845 1979 14.928773944746581 1980 0.24789634252245207 1981 13.157891116024032 1982 3.8220457823750422 1983 -7.576943663632889 1984 8.830347268156927 1985 8.639549723285825 1986 6.0919034570370485 1987 0.5144454274789609 1988 -12.66119617284572 1989 7.1140966629438225 1990 -1.000001589991129 1991 -4.00000230220131 1992 6.000005468890478 1993 12.407490633321586 1994 6.8417016917310605 1995 6.409914749874915 1996 2.1745419494608456 1997 2.8658291792175135 1998 3.321542070066826 1999 7.073408003057608 2000 1.784186337031727 2001 3.3833179286475 2002 2.5125756108612904 2003 3.19826669944932 2004 8.318639285253354 2005 -4.958468255717264 2006 0.009583639306271152 2007 5.386361236962301 2008 3.6359150025827063 2009 2.560605186765997 2010 5.019469927716187 2011 2.922310192005199 2012 3.4647074209510436 2013 4.224127569834451 2014 5.229005083016517 2015 5.250318161146936 2016 2.529873480953327 2017 2.52031616501165 2018 3.843857576687597 2019 3.864156822975474 2020 1.3619137508134997 2021 2.909708680318147 2022 3.181504204225007 2023 3.2997931414465285