Year annual % growth 1966 1.9849625644165343 1967 19.482551127885216 1968 14.129242221518453 1969 5.715630301233148 1970 -11.711497295599187 1971 19.40801809142107 1972 6.837666820484685 1973 3.9991503377771096 1974 2.692965007284087 1975 18.35277537105695 1976 -8.86033611027699 1977 26.040687451017547 1978 0.2753060422201514 1979 0.8997961893837356 1980 10.073974089892388 1981 7.258557652519386 1982 -2.255936983574358 1983 -12.820306280011962 1984 -6.863011031163282 1985 24.81526819556362 1986 6.160971966102551 1987 -2.749689099343982 1988 2.5034565770031207 1989 -12.012899131046183 1990 5.568897754952502 1991 -0.8610153223049082 1992 -12.026909684745135 1993 6.249520366002329 1994 -14.537618357635694 1995 12.172833617931914 1996 11.559709978446449 1997 1.0948842437325226 1998 21.796906302742343 1999 -9.205581449759606 2000 -4.249220945221182 2001 -10.51109106623764 2002 5.316687522274009 2003 0.10847375397460723 2004 21.163157592297438 2005 7.952327264559898 2006 2.3766451886143187 2007 4.161505870476162 2008 17.353105439726875 2009 12.59483542231294 2010 24.99733665433554 2011 20.212452201393987 2012 18.513375870218994 2013 11.872717992677224 2014 -8.904717734029134 2015 11.170410414038585 2016 7.321422302128028 2017 10.106928473174122 2018 8.5012810225479 2019 3.3544463467186603 2020 1.5348586252830927 2021 6.495916978497135 2022 6.113546620930336 2023 12.802742919505533