Year annual % growth 1961 5.855018594000356 1962 18.43722563331862 1963 7.712765956054952 1964 -4.320987651321815 1965 32.06451612395216 1966 9.086468003442931 1967 8.68786385891542 1968 0.9476720256819391 1969 1.306122447367187 1970 -4.834810636564484 1971 14.00053830798251 1972 10.892063120535056 1973 2.008445406372843 1974 -9.990607715856498 1975 19.43188405563933 1976 -0.4595023141809804 1977 -0.8614804456820337 1978 3.9808499498771113 1979 -1.1762850850432756 1980 -20.876271197571086 1981 8.216358382681506 1982 -25.2057018244448 1983 -13.156572414428851 1984 24.237527556206246 1985 20.773491279311145 1986 8.943899850187307 1987 7.73398445532716 1988 -0.17587277302895643 1989 0.32176178792802546 1990 10.2434242785083 1991 12.589314658977486 1992 9.924007621953379 1993 -0.7284046931532941 1994 -0.6446175974771222 1995 8.919659168776775 1996 7.94025860385446 1997 13.539106942761364 1998 22.310756085407107 1999 -17.140866197033915 2000 4.669918401153666 2001 -5.040017061604047 2002 13.095009376660798 2003 0.9150248583704297 2004 5.465470280301091 2005 14.786589815754098 2006 5.16039676423506 2007 4.37237630832648 2008 9.434644830355694 2009 -10.20909521565062 2010 11.041060055921577 2011 17.0102179817913 2012 4.280905805550404 2013 8.179371981974313 2014 15.08279708968881 2015 -5.405577288674692 2016 -4.192668127950611 2017 5.580685276584688 2018 1.932755746984725 2019 1.5246608922274874 2020 -24.963024495784225 2021 15.69794703921852 2022 8.802541118273453 2023 0.6241577416839874