Year annual % growth 1961 4.838971687598885 1962 0.1594852913632252 1963 14.174470623207696 1964 6.593818918602139 1965 11.115202647223256 1966 -4.084169241912264 1967 12.33390109358605 1968 6.919553344888072 1969 -13.182263251077629 1970 41.697863425332315 1971 -6.9252134224755935 1972 -27.857281971953597 1973 -9.032181165168069 1974 14.669840375009642 1975 -8.006727288295949 1976 5.469015506298263 1977 9.472256589415977 1978 8.510200052934238 1979 18.750027259277118 1980 6.581601392737227 1981 -14.28636869074893 1982 0.4836673709154269 1983 4.923830766890177 1984 6.565440570448985 1985 6.2815667112701306 1986 -0.4783044221711208 1987 1.267993828826235 1988 -1.387266803684554 1989 7.3806578386523825 1990 -1.4879003090767355 1991 -1.431742484199276 1992 18.828826085480998 1993 15.484505712041212 1994 -1.5180906126124256 1995 4.237349977924666 1996 13.253868522032917 1997 1.3814638339133722 1998 -5.849588741874911 1999 -6.003858982664724 2000 0.1729435780304982 2001 6.577826736195092 2002 -2.8725781453943853 2003 4.1325753568288945 2004 6.9602642905109775 2005 23.731966794837092 2006 11.601928771411266 2007 7.530192500351163 2008 7.884893307567609 2009 -5.221651995701649 2010 1.9765682932825683 2011 3.0975113241682237 2012 0.052424584017657594 2013 -0.12848692613469836 2014 5.251110401144231 2015 1.986447625868152 2016 6.043435915998629 2017 10.074584495734797 2018 13.978574546173235 2019 7.256964563853344 2020 -10.683708153546277 2021 18.252763985646993 2022 11.529984683114904 2023 1.2644749082850524