Year annual % growth 1961 -6.73539518434292 1962 -8.10611643369188 1963 23.015236566828207 1964 15.48239895819674 1965 0.05644933171808475 1966 4.45698166762854 1967 6.805293002355441 1968 -34.56384323411346 1969 15.340030907833196 1970 9.892538812026629 1971 5.110497238381797 1972 -1.7520805995508937 1973 4.4137316140999445 1974 4.696840303040361 1975 23.29959416789724 1976 12.384607403940208 1977 40.64605445361991 1978 2.677341034605732 1979 14.354189300253722 1980 17.012318903321287 1981 29.698531570477343 1982 -10.412398200514588 1983 7.46778503106114 1984 5.806451612265292 1985 1.1005353967798328 1986 1.8534863186802966 1987 -7.163489312846167 1988 11.179740581526644 1989 16.66666666666636 1990 7.142857142857025 1991 3.333333286432591 1992 12.90322586822694 1993 1.249335965821814 1994 0.5223987417258229 1995 11.29063523389317 1996 1.7803028117755844 1997 -0.9469875951802464 1998 -2.653061195187206 1999 9.161425590381313 2000 7.028999366307048 2001 3.290676456610825 2002 4.973599016272303 2003 13.83285303506419 2004 25.31645570761188 2005 20.202020178013626 2006 21.260504203036135 2007 23.284823289863567 2008 28.761651127676373 2009 -14.51223716033158 2010 -2.983870967091704 2011 1.2468827984629485 2012 -2.298850577117662 2013 4.515659139260265 2014 -10.940766549270464 2015 -0.03912363337339286 2016 -15.029354200610655 2017 86.04329801524761 2018 31.590453639194067 2019 -2.685864604121406 2020 -23.65912647514115 2021 -13.84644055162137 2022 57.343716201600756 2023 31.372549019607845