Year annual % growth 1961 22.841216842619687 1962 -0.45364236862425855 1963 12.073020483680182 1964 3.2519723979207384 1965 2.5590161276859646 1966 2.4951644665742947 1967 -6.36704054229665 1968 18.2001512158144 1969 4.90685069677788 1970 -3.8709750132619405 1971 0.6711702777482316 1972 -13.16669560567206 1973 1.9193735968460572 1974 -11.110985286329196 1975 6.779524307672972 1976 -27.579328856733937 1977 9.315059535943874 1978 13.283092835978266 1979 38.053232672516 1980 -21.946735138109446 1981 -30.674354097524272 1982 -11.318350994784993 1983 -14.402033752973693 1984 16.2316176592237 1985 11.76227060138568 1986 -12.897499136624305 1987 -7.028663746181664 1988 -2.3194657978520468 1989 -10.68589190023232 1990 44.610867849590164 1991 -20.014973210847756 1992 0.626447385190815 1993 13.962638862477036 1994 -0.11585148272043 1995 2.9578106908771247 1996 4.003908825446501 1997 7.64192437470588 1998 5.1860153576546395 1999 5.976738132665901 2000 16.654983468100767 2001 11.778543051774108 2002 -25.02222606285855 2003 56.86179849551826 2004 8.873041467586162 2005 -6.99710582957141 2006 3.324542656775691 2007 30.36701699379222 2008 37.02582859772082 2009 -17.823412412357953 2010 -5.891262783598734 2011 2.5306630174484894 2012 -3.450117743861611 2013 10.940703006092292 2014 6.971684162274627 2015 6.54578715807807 2016 4.8408741380577425 2017 23.674602172074998 2018 11.138021449960988 2019 4.55156252490012 2020 -16.586465266765586 2021 12.678116843994871 2022 19.837500003459766 2023 1.8999898627550351