Year annual % growth 1971 7.0452296828811996 1972 10.50115865204026 1973 24.332785656919967 1974 4.181122722939264 1975 -10.290448013844596 1976 6.675304513556284 1977 4.08962964002599 1978 6.911433086976771 1979 12.912377049969237 1980 -7.761028003218954 1981 2.424150273482283 1982 -0.5753444443552809 1983 -3.2295163997933827 1984 10.614874585600802 1985 -2.578225137600839 1986 4.263972355187846 1987 9.373515439429923 1988 18.99923989467112 1989 17.800824669362328 1990 8.164633718298475 1991 -1.1355294960164741 1992 -0.6861098409565329 1993 -1.2004968830843268 1994 8.272813679441143 1995 12.990701598881799 1996 11.767368097500082 1997 0.5117268630451406 1998 -6.803898397265883 1999 3.702456236412516 2000 9.562400673897756 2001 1.1629473804356536 2002 0.7872794199455626 2003 3.3939652129837867 2004 8.504060150375949 2005 5.945933210634863 2006 4.70413562603423 2007 2.270819174029512 2008 0.7328437121300908 2009 -15.560320207230006 2010 11.285513628098954 2011 5.7279950855701856 2012 5.453191658173083 2013 3.169043429947209 2014 8.124892011426027 2015 0.4399640972694243 2016 -1.175364557236648 2017 3.306787318964055 2018 3.8135618947389816 2019 0.9883068069278096 2020 -6.751026751026757 2021 5.142160373960252 2022 7.885840298492781