Year annual % growth 1971 9.825861305580275 1972 13.50862812804236 1973 9.527144717509572 1974 -6.955255329497632 1975 -11.303318099728145 1976 0.8202510229520215 1977 12.001113565740624 1978 6.214777050659649 1979 -1.344460651004681 1980 8.535595526967171 1981 5.5034383394507245 1982 2.2574428038210357 1983 -7.1318922013338835 1984 -17.386241945422228 1985 -3.546975538771818 1986 10.870762630278819 1987 17.997254512513194 1988 14.832624873485841 1989 3.657294494918034 1990 7.607178229043555 1991 3.328313388365018 1992 4.523851152297524 1993 -5.54300797300607 1994 2.722434930004681 1995 6.550839351724676 1996 5.187146442343732 1997 14.162262281195197 1998 11.734435745915775 1999 6.069482242446227 2000 4.057395102293057 2001 0.9725035209029187 2002 -3.3918916141288094 2003 -7.313883155761474 2004 0.18883751610879074 2005 0.11016637540448926 2006 -0.7567737318362617 2007 3.0861913759061963 2008 0.42345835022669576 2009 -7.538241160752619 2010 -1.1255481208985287 2011 -12.592264850520465 2012 -16.712487299356 2013 -4.8055025783905165 2014 2.2884955850544344 2015 5.919150370444697 2016 2.547237487980297 2017 11.488987237042437 2018 6.182558005137963 2019 5.387743824137033 2020 -2.1773008917918446 2021 8.06508373213282 2022 2.9968229638968467 2023 2.549433973260747