Year annual % growth 1965 19.83434072084171 1966 2.596674761815848 1967 21.121631463947438 1968 3.3523752254960897 1969 7.927272727272737 1970 17.196765498652326 1971 9.130634774608936 1972 2.718651211802012 1973 -12.679524004924076 1974 -7.648026315789451 1975 -2.264342958911172 1976 -8.382142392294696 1977 -15.627219775536304 1978 3.670651624852823 1979 0.11369173298677993 1980 -1.8170019467877694 1981 -4.742233972240655 1982 -21.491760624457953 1983 -8.882015024304096 1984 19.253152279340696 1985 10.736071573810364 1986 -0.8813808299668153 1987 27.36198592071139 1988 24.043636363636196 1989 7.481238273921193 1990 2.8692995854244145 1991 1.6650758298865753 1992 -1.2100980596704431 1993 8.342133051742337 1994 2.4463937621832343 1995 10.141756255351524 1996 10.978664593590821 1997 12.13418430884181 1998 3.866176164364063 1999 26.463512429831866 2000 1.5641513422108204 2001 -0.9053069719042526 2002 -4.063845426861008 2003 -0.14776707530683098 2004 6.374349136749942 2005 -4.225319455894606 2006 -0.7612996591872729 2007 -2.5473749948503865 2008 -9.20388461850817 2009 -12.510721725278671 2010 -6.400560224089631 2011 9.591500822984017 2012 5.290824685963429 2013 -7.670362445697819 2014 -6.088483146067432 2015 -3.6204527999826865 2016 -5.846240179573513 2017 -1.585390566330119 2018 84.81970906360147 2019 1.5977560636743107 2020 -34.41271520444825 2021 19.68567438383917 2022 5.733232534060846 2023 2.7830668915295576