Year annual % growth 1966 1.1310475452806372 1967 0.5591843614870697 1968 6.950863350278453 1969 -3.3795361890212376 1970 8.609850115901878 1971 -5.450033957476052 1972 -0.7860462349870829 1973 6.338053038934291 1974 -3.476823210046703 1975 0.5145570294971265 1976 3.8395821598717674 1977 16.10520844810989 1978 -1.2738956624651507 1979 17.13263341314142 1980 -6.487142819450682 1981 12.958095771552891 1982 1.7381370311083657 1983 -18.109342071369056 1984 25.799701040821475 1985 -13.709223163387378 1986 19.154393383784992 1987 -6.559142284925059 1988 -2.186420884082267 1989 18.008829962901544 1990 -4.545095202055521 1991 -1.649879093519118 1992 3.6157053908341794 1993 0.7756694966941495 1994 10.95323996826265 1995 -3.201722536171687 1996 4.45450879218032 1997 -10.319858325033664 1998 -7.963218882877399 1999 13.624162305558428 2000 -1.2655329349119881 2001 -5.691959759549306 2002 4.699400740219218 2003 -4.3124309521107875 2004 5.17360239111602 2005 0.8526434270422101 2006 4.995078173096857 2007 -4.898292631049756 2008 -1.1594826076235023 2009 -8.090669447936932 2010 -2.648348545757571 2011 6.0478348939660265 2012 6.74261336745721 2013 1.876412407282686 2014 0 2015 2.921574548939091 2016 -10.907795715600827 2017 10.785247975325646 2018 3.683986854222283 2019 4.522652331069239 2020 3.118427722489784 2021 0.7922702746059116 2022 4.101967531770384 2023 2.307230251399119