Year annual % growth 1966 1.3329141287625532 1967 3.5770771833024924 1968 0.640094015362692 1969 3.876307450632879 1970 2.302866369593332 1971 5.057273649220633 1972 2.717130505884356 1973 3.701263906347691 1974 2.857200423055957 1975 2.929480531844362 1976 2.449485014893952 1977 6.28285569438998 1978 2.6820579539814418 1979 1.93896779278478 1980 2.5799409058782743 1981 6.410897319654808 1982 0.7695318045331447 1983 0.18378569223962415 1984 2.8556794551268183 1985 3.421138687213144 1986 -1.9801118208373936 1987 5.5253005889668145 1988 1.8148008513063871 1989 -0.030140363441859108 1990 1.5502989782898453 1991 1.401935710890541 1992 1.032550875369978 1993 1.5452585921319866 1994 3.645740786933274 1995 3.7045762622330187 1996 2.617848481615198 1997 0.8426551037724437 1998 2.656131676829915 1999 3.733452809844138 2000 1.8572120547605095 2001 3.4211927864626688 2002 2.767284851201495 2003 5.816579674432873 2004 1.7755426030789323 2005 3.227979759026667 2006 3.8056122898140927 2007 4.929386134969249 2008 2.207817705128633 2009 -5.4655661981547325 2010 8.329160809307211 2011 2.6834519046062155 2012 -1.6772756177399657 2013 6.8739560190214775 2014 2.7298604387276555 2015 3.372823408871213 2016 -1.022470301808326 2017 7.464003220077657 2018 0.19454905931081612 2019 2.9915222779098656 2020 0.6480858725791023 2021 1.637058058407277 2022 -0.4083755039855532 2023 4.095627554647294