Year annual % growth 1971 4.746030415122561 1972 4.918953815456106 1973 5.15886510771135 1974 2.1802124618994725 1975 2.3109795274117033 1976 4.819431708201208 1977 3.1485935085056695 1978 2.878508692123873 1979 3.6763773819030234 1980 2.056051898334573 1981 0.5017068408650545 1982 0.807009847316607 1983 0.843596874287968 1984 1.3875476612760451 1985 2.181817985025475 1986 3.638324984295565 1987 3.529798855093148 1988 3.381497315286339 1989 3.4780982035460113 1990 3.0625977147710444 1991 2.047262418719157 1992 1.8773350322256022 1993 -0.7514522193682183 1994 1.7174549036131026 1995 1.845865576961998 1996 2.3205368901943615 1997 2.0098279154302787 1998 3.2561468200656947 1999 3.3113038294744257 2000 2.9468791914160306 2001 1.9087292149258417 2002 1.0990074998407522 2003 1.3938527431868835 2004 2.097198268914255 2005 2.194840057753723 2006 2.303538224915073 2007 2.2127796103367245 2008 0.6285839159942697 2009 -1.1208128345948012 2010 0.956675827014891 2011 0.37087459761684727 2012 -0.8187152588262592 2013 -0.5982141272012171 2014 1.0791497874888023 2015 2.1106106599607415 2016 2.194991872383966 2017 2.2183376930407803 2018 1.871386936873293 2019 1.5271351342440909 2020 -7.116249037355047 2021 4.649457557766709 2022 4.063086506414379 2023 0.3314220855558716