Year annual % growth 1961 -7.44551296932778 1962 7.782862249181591 1963 29.490290110995915 1964 9.746952919724478 1965 5.4654140457327145 1966 1.6599193557022858 1967 6.371963042669009 1968 3.968551439300768 1969 -2.124594975062621 1970 7.910228141595496 1971 6.409819084042326 1972 -5.575135956536798 1973 10.010179735662135 1974 14.34299804182156 1975 -5.017534110502709 1976 29.82107312850627 1977 9.341500844393337 1978 4.361744702630006 1979 -7.438650301533684 1980 -8.616404337432414 1981 -4.102447898821552 1982 -20.987945906641258 1983 -19.86239923973814 1984 7.1295262627711224 1985 -12.891986210287811 1986 -14.56000026976885 1987 47.84644211811312 1988 3.768207718784595 1989 5.859017495161666 1990 3.891611560417104 1991 2.4553272615105186 1992 36.76408098161792 1993 4.422851131610599 1994 4.961282728265374 1995 7.590820650069816 1996 -6.861420063649717 1997 19.5025221961169 1998 24.501120405150772 1999 0.7119165032976866 2000 6.0357887797881205 2001 6.920224032297412 2002 1.9863586596537743 2003 0.5368432432806713 2004 5.68371630662125 2005 -0.571970379630244 2006 6.450058802640044 2007 7.234670213887767 2008 -5.747167576043196 2009 -7.801369347686631 2010 9.994590065160551 2011 7.001978016707483 2012 2.7918918659054555 2013 4.2587826550853976 2014 3.370191940835255 2015 3.6479621155778545 2016 0.9423562446130802 2017 2.8247751017971297 2018 3.9268579489265534 2019 4.8571007004644144 2020 -5.756554990170969 2021 19.486216319649003 2022 4.361016134517797 2023 4.078511327757454