Year annual % growth 1971 5.244755244755254 1972 -0.0766675185279837 1973 -3.7902813299232747 1974 10.005848264128872 1975 1.3919095258808198 1976 1.525334858668188 1977 -2.2817972674773443 1978 -0.8744534665833754 1979 -6.63079831321798 1980 8.197061724549656 1981 7.7967565492755 1982 -1.081586326612367 1983 -3.1677465802735725 1984 10.520446096654283 1985 -9.329801547258668 1986 -6.964989566427079 1987 4.715147286048932 1988 0.9138940454091085 1989 3.740389604263953 1990 4.77857597526598 1991 10.258190496853985 1992 -5.198945255618099 1993 14.899535038193306 1994 2.8182245185533077 1995 6.718909231472054 1996 -0.38855411768579984 1997 -1.3817725033883193 1998 1.8167800757550339 1999 0.0032921810699519938 2000 -4.776797471688184 2001 -2.7968885047536673 2002 8.74235310855029 2003 -1.7989141100281216 2004 11.627364774846782 2005 2.219901536625386 2006 3.601973204121549 2007 6.964753613388552 2008 3.9589095219281063 2009 1.5430221951961016 2010 9.988272575292555 2011 4.088021778584377 2012 4.616189355302723 2013 -4.714583333333337 2014 7.363841091457687 2015 -5.541187251807358 2016 -5.997757847533634 2017 4.433282876932253 2018 -1.2276271000329473 2019 0.9827463536108212 2020 6.8497071645603 2021 7.309031712996344 2022 3.7829326369152767 2023 -4.869925618917222