Year annual % growth 1971 5.765904724881722 1972 7.751105593112541 1973 5.593310989966099 1974 4.501281015259707 1975 6.896414719847542 1976 6.2583303635166345 1977 4.265433684405082 1978 3.1346974475432177 1979 3.720988854566869 1980 4.64124978200519 1981 4.531311469546864 1982 2.593403585602843 1983 3.1648102447809094 1984 3.3230968159043215 1985 4.323749335168799 1986 4.102564102564116 1987 4.329789992221933 1988 2.413297989838739 1989 3.2245888379617043 1990 4.53951836180326 1991 1.748950629622243 1992 -3.204498575778416 1993 -3.8103452649737477 1994 0.20043779834901443 1995 3.0268733714105167 1996 2.071890248575727 1997 3.3113080042048324 1998 2.0277636456137884 1999 1.6977727121622195 2000 1.2795068761820403 2001 2.383751757844024 2002 2.4295782576388802 2003 1.250824357001548 2004 1.4459714713736673 2005 1.9839486356340217 2006 1.1542012927054515 2007 1.2613584498568429 2008 1.7742265929112904 2009 1.4272485707383993 2010 -0.2560285799345081 2011 -0.12734797835084066 2012 0.5618425247051277 2013 1.1689186511867575 2014 -0.3250822497258383 2015 1.2711697905615154 2016 0.8555631002037103 2017 0.2096718347247304 2018 1.9061330262021272 2019 2.032474382157929 2020 1.1538390532981282 2021 3.8892539056796664 2022 -1.0294608506227831 2023 4.458881374585076