Year annual % growth 1961 9.65995440869267 1962 27.873538327477206 1963 10.268915532850471 1964 37.5698752927274 1965 17.13328868583983 1966 13.895242452571168 1967 -0.9137463579656213 1968 -14.6534252121822 1969 16.464814372684472 1970 1.1350506307695554 1971 3.2930107581519223 1972 -7.823682498867086 1973 33.18157755343785 1974 25.216630889061904 1975 -5.804922436090166 1976 4.715794204766269 1977 32.646055480161095 1978 -44.566114032315674 1979 -64.92180205356291 1980 152.22092829060432 1981 60.091682611474795 1982 -19.25303339300072 1983 4.699339236660819 1984 2.190599183983167 1985 1.1159330454902516 1986 -6.076970239565767 1987 1.0068040840105255 1988 -12.033308475874804 1989 -18.13840458970047 1990 -8.101484292081409 1991 -8.503924714885898 1992 17.857875728124384 1993 -5.68811192776954 1994 15.744570740056886 1995 5.184745202598265 1996 12.480039834784606 1997 11.890797254688536 1998 6.878895496765793 1999 36.09129244516879 2000 -11.072362770091686 2001 -5.429122947626922 2002 -6.2767749640282915 2003 0.596156262807753 2004 6.7308167752733254 2005 9.935533277309759 2006 1.8984739577638123 2007 12.612737136735902 2008 8.591856147779936 2009 -24.578258780977137 2010 7.436963770559359 2011 22.049797740270606 2012 20.632018057658797 2013 5.333964945523448 2014 3.323439467530136 2015 16.996735582154514 2016 1.415550595238102 2017 2.054254324021926 2018 -21.992775111877933 2019 -27.46521057967007 2020 10.707365879998719 2021 33.981752453090024 2022 -4.199323311490858 2023 12.090663209423951