Year annual % growth 1977 -2.21617099782209 1978 1.3506892988889945 1979 3.211774707049159 1980 -2.2538171933260855 1981 -3.8009208866259883 1982 6.75795808586868 1983 -3.4547143481812697 1984 0.2502535362600895 1985 -3.3491286427890827 1986 2.0575292313682354 1987 -1.0409346910038977 1988 3.051574199107378 1989 -0.5015769086245712 1990 7.622929039286802 1991 -2.985202683059157 1992 -2.0749455376502794 1993 -1.830336969512686 1994 7.801577093003758 1995 0.2721598799623166 1996 -0.05694150637836515 1997 0.31519458441179893 1998 5.147575222752181 1999 4.873501533314737 2000 -3.5983873022202317 2001 -0.6821987769253184 2002 -1.6161312340208838 2003 -2.457551385165317 2004 8.580357788653956 2005 -2.3103803356768253 2006 -1.4953276338706019 2007 9.423132391116226 2008 7.175844162690765 2009 -6.6068525527985 2010 -5.076501724909804 2011 14.254285579534638 2012 -7.2344858231370495 2013 -2.97953873819165 2014 2.7796663213329964 2015 2.0981260450599706 2016 2.2442357925913683 2017 5.213475122019929 2018 2.889243667754897 2019 -3.2250646336959363 2020 -7.521020404734287 2021 6.356333623162087 2022 6.622658776157635 2023 -2.933307088596564