Year annual % growth 1971 4.61980246183829 1972 5.043632237730165 1973 4.993595369353471 1974 2.049631841180897 1975 2.4345632270562447 1976 3.796843318884882 1977 2.52123938123934 1978 3.4078224977664604 1979 3.619019539750809 1980 2.082411406046532 1981 1.1204064365906845 1982 1.0498617035910058 1983 1.5018702790214178 1984 1.5091593416494362 1985 2.439608759822704 1986 3.571224932010381 1987 3.399711740698237 1988 3.377783085152089 1989 2.703460227541015 1990 2.8357357009599866 1991 1.1373025397462015 1992 1.4647460163982373 1993 0.28410603474759455 1994 1.2779542706280012 1995 1.4184513462043924 1996 2.2059222419937896 1997 2.3420623367841387 1998 2.7907898839957 1999 2.824580813989357 2000 3.2260338561976454 2001 2.328154508107545 2002 1.9951461528682017 2003 2.259140165361927 2004 2.765532957413768 2005 2.7261212363921743 2006 2.6579841096294956 2007 3.053869440580698 2008 1.5459790112756622 2009 -0.7194253398994874 2010 1.5952666749021773 2011 1.048703313046289 2012 0.6380895157352029 2013 0.8816080314056478 2014 1.3797159781277628 2015 1.3594288073869762 2016 2.1226007476428066 2017 2.1535527167642528 2018 1.8220985805734244 2019 1.8617805361430726 2020 -5.357923991598241 2021 5.822268620404358 2022 3.741636198530898 2023 1.6632633021235392