Year annual % growth 1961 -3.4884330865138367 1962 -1.2043118607570023 1963 -2.4387956823538985 1964 -12.500408272027045 1965 -14.286248410648511 1966 31.666286503101986 1967 7.59503374208559 1968 23.528695792905225 1969 11.428782131184875 1970 173.74424516386375 1971 19.690217037521847 1972 20.125838313729048 1973 20.41140691511201 1974 28.242083325846465 1975 -4.423987706826821 1976 -1.162955585791309 1977 -7.722505246325909 1978 4.402968349642194 1979 8.397000911345657 1980 0.6865374902428982 1981 -15.002919773746868 1982 -13.31439739666223 1983 8.585679899766745 1984 -4.0163957087094815 1985 -8.009099054570115 1986 -4.747888560455451 1987 0.3292917275455238 1988 -4.942690145237549 1989 -7.603316496105407 1990 22.102655425125036 1991 14.913688387089678 1992 5.450908249323589 1993 13.539539258344476 1994 6.094062792556315 1995 7.766569776792949 1996 5.5943151965335005 1997 14.595076928244595 1998 -0.05666123661600864 1999 -15.094145470965302 2000 10.7985866982889 2001 3.3314028459030283 2002 -13.307269036794068 2003 -0.4834971956360903 2004 10.36404524929091 2005 7.461346040958944 2006 17.762584548600643 2007 19.557598680249427 2008 17.02571025322257 2009 -7.601967440052576 2010 33.63902464944067 2011 9.39326345661722 2012 1.1308517345536018 2013 6.6696793079782 2014 -2.2718955930375984 2015 -14.190636858493093 2016 -10.342932803848939 2017 6.71694069690902 2018 7.742778940762804 2019 1.332566090885905 2020 -9.476639026042463 2021 13.752053246918152 2022 0.9514937603778009 2023 -261.884174554865