Year annual % growth 1961 -12.048194043542892 1962 90.06848934949377 1963 19.054080273647415 1964 15.28560074422569 1965 -38.46404432140974 1966 36.069390654428844 1967 -0.2132511755025206 1968 8.03182146390003 1969 9.452714991783424 1970 12.37075927394335 1971 -7.109485292331243 1972 5.337293821301444 1973 13.581525354330637 1974 19.8555928287431 1975 2.166907063273854 1976 -3.90409449372585 1977 5.505963556511048 1978 -2.5386381450821887 1979 12.071533741121158 1980 12.722024918913277 1981 -14.556496461781109 1982 -18.261409009848023 1983 3.9295280427975996 1984 -5.622400871715158 1985 4.15432539630423 1986 19.950897058609456 1987 18.020582776144977 1988 1.833851534037123 1989 15.76981006734735 1990 -14.381227442531326 1991 2.600000003442119 1992 21.164206380319214 1993 7.122591668945489 1994 8.562745064107816 1995 5.076927755393086 1996 3.379184584085195 1997 17.205580672745995 1998 16.92020458317735 1999 1.006393212015169 2000 7.531860862236897 2001 -5.888778981477856 2002 0.21995947626169254 2003 -10.075074423428916 2004 5.88858530490954 2005 8.7192016507599 2006 6.040604374980802 2007 4.558695867020873 2008 5.481665146686382 2009 -10.526026264000805 2010 18.703208160499884 2011 0.11252663328487245 2012 1.522897919068697 2013 -2.185870441371989 2014 4.7762614114732 2015 11.023984105036703 2016 8.122949234812296 2017 -2.9756323475840247 2018 8.525654373811363 2019 5.812880448654141 2020 -14.509324073293271 2021 25.665621579267523 2022 14.394882465643335 2023 0.2947686311272122