Year annual % growth 1978 0 1979 23.616449926426753 1980 -2.1556075253622566 1981 -7.260063921904674 1982 -12.159839284438178 1983 -1.1783656256328356 1984 4.072514367117975 1985 7.469520311459661 1986 -0.9363157864608525 1987 10.623367893067282 1988 -1.3570360484567203 1989 10.888798528680766 1990 6.406219325662249 1991 5.042443343532284 1992 4.329263457146482 1993 -1.290353350392266 1994 2.9100831559234734 1995 2.753153395429294 1996 7.223192690750551 1997 12.29641039512326 1998 -0.21725712385276097 1999 4.989367370298552 2000 7.103008868253966 2001 -3.0796126759442046 2002 -3.2813967695063013 2003 -0.522296110052352 2004 -10.867814100857927 2005 6.332850934690953 2006 11.700540909266266 2007 11.951420821587888 2008 -1.885207459863068 2009 1.0802148505148779 2010 4.8660491663518 2011 6.085711150350122 2012 6.140115894437528 2013 9.717084411387304 2014 4.973739124988754 2015 10.069597476496 2016 13.617289253022662 2017 8.891064097842232 2018 4.592465165168207 2019 6.584439851889854 2020 -14.819180394433516 2021 3.143942409021065 2022 16.065308021659746 2023 3.0720585449770255