Year annual % growth 1966 5.3960039976246605 1967 -19.082431337349433 1968 19.900917893653585 1969 -10.20011013540693 1970 12.790204798990132 1971 31.118524544174903 1972 38.19074514699017 1973 1.9955455536163385 1974 11.866270346722715 1975 34.94023213546245 1976 0.5423459486810174 1977 3.9937487139409313 1978 -3.4468263984859533 1979 24.211305384860495 1980 -16.226634936336694 1981 29.51330893801196 1982 36.112145984598925 1983 14.222011794373614 1984 22.406826448691447 1985 -0.15910139041533 1986 4.245578322046967 1987 -0.11101507271922628 1988 -3.5399833961431284 1989 -8.99252794818183 1990 -10.69810722352625 1991 -3.4573229400691474 1992 5.726305436981761 1993 11.144286802113584 1994 -81.77223287991326 1995 155.78492373748375 1996 9.321399389314251 1997 36.20637464453128 1998 29.557714324505525 1999 18.028666665409986 2000 16.73026171329613 2001 0.1093156062224665 2002 7.722443017645105 2003 9.89096342518998 2004 11.901610082181264 2005 16.050155900812285 2006 24.352635123292217 2007 27.671282163509517 2008 32.68443828524363 2009 2.7330821840571673 2010 6.999515114054759 2011 9.335926840005342 2012 21.87271983625179 2013 7.212507978934113 2014 4.855499953290376 2015 18.787187317367014 2016 9.01624754842696 2017 -10.271125890990007 2018 5.824072765433215 2019 31.97190264876636 2020 -4.511079499361671 2021 16.385632842062265 2022 -4.008614905467553 2023 11.903606073338153