Year annual % growth 1977 0.5561871678610828 1978 -0.22124640903888348 1979 -4.545556406661419 1980 12.280015611728288 1981 12.525428270243054 1982 2.6342959893388382 1983 1.5853058047608783 1984 -1.9073530054700285 1985 6.943342206407266 1986 15.154269886341169 1987 -3.7313408816354183 1988 13.244648265914876 1989 9.580394960476596 1990 2.1474093227931093 1991 20.134528368632616 1992 3.496694529030634 1993 -9.766982471272456 1994 13.53383880515291 1995 6.170272940695838 1996 11.789018868567297 1997 23.28062443015868 1998 -10.001177464756665 1999 -23.981466530903106 2000 -2.819975598170757 2001 -1.4857746345356588 2002 -1.3750972964621866 2003 -18.355764668445644 2004 -7.2464120740822295 2005 -9.082277392996204 2006 -6.6805955552738965 2007 -12.666982462902013 2008 11.647857746796774 2009 52.06704474673174 2010 21.11658673420726 2011 -8.500019964319577 2012 19.90539569059871 2013 -24.528387569585163 2014 0.41654159286123615 2015 80.60596621730119 2016 -3.2762248319728684 2017 3.2479101354460482 2018 -12.397178949370868 2019 8.327128039290656 2020 -44.09900036325798 2021 61.48968560797857 2022 54.58057019846913