Year annual % growth 1961 6.527141343139164 1962 4.7525025231548454 1963 3.6370616434557803 1964 6.222932769015273 1965 15.769861970687089 1966 8.120035592393009 1967 3.8911559640615963 1968 7.215824643290517 1969 -3.908636031466955 1970 -4.410833816551758 1971 9.042553412287432 1972 1.9512197875378945 1973 5.741626301413348 1974 -8.936650959736212 1975 -6.708074612230561 1976 11.185085576019432 1977 5.988023697363559 1978 31.74080493542553 1979 7.1939924661975 1980 2.454568522889815 1981 -1.5348621940053135 1982 -2.5979087979735596 1983 -0.541348375268285 1984 1.2976703709390023 1985 2.3351875996883393 1986 0.8701644483285662 1987 6.771522139516421 1988 -0.8139733658308899 1989 3.4897228641121103 1990 1.7141376440700924 1991 -2.396504706254035 1992 8.600233095592728 1993 -1.6191370982470659 1994 -2.0716895437227265 1995 6.738970036632153 1996 5.939227592298252 1997 -1.5531131928082118 1998 4.178352834955206 1999 -17.791597774170697 2000 19.03182428095154 2001 2.120830587974339 2002 4.503002427494579 2003 2.3491799570875855 2004 7.221439151416689 2005 -2.2938564974961366 2006 7.577891166158324 2007 5.541688527109585 2008 1.9266497283509239 2009 -1.9478696099827175 2010 1.773539593140967 2011 6.484274338860715 2012 10.68279385448443 2013 3.4400720433935845 2014 2.814648644708811 2015 2.6308638134134696 2016 4.774568381627773 2017 10.349740505656868 2018 2.632688216297325 2019 -0.955303811836842 2020 -5.350886644659724 2021 -1.5561665384522598 2022 0.3181856409968873 2023 3.9500342326985134