Year annual % growth 1971 6.6936259800139055 1972 -0.914736226501006 1973 15.542689794998864 1974 4.2390825394720935 1975 4.430678068816917 1976 13.389358150464602 1977 2.0777784798129915 1978 -15.249275030406935 1979 0.5539650311856263 1980 2.6659548737838747 1981 1.5482734469512138 1982 5.574772101059295 1983 -3.0711059346779592 1984 5.362607437664877 1985 9.008848928533354 1986 11.987350850883487 1987 -6.56802369125154 1988 -2.7030701642576105 1989 2.1508005822416436 1990 2.400766056405473 1991 0.3890769025248346 1992 1.719663996007867 1993 4.96057648543389 1994 5.381523393073223 1995 5.587683785934814 1996 8.840043312268392 1997 12.619292148105572 1998 9.20984744494558 1999 -1.8353357925345364 2000 2.8051855798259595 2001 1.9746206572510516 2002 0.5400396729270369 2003 0.8267693318618825 2004 9.14772518390032 2005 7.908886588973061 2006 8.826625729616836 2007 9.729034175799242 2008 4.479367534833003 2009 -10.239947234352258 2010 7.984655029557317 2011 3.935410600020191 2012 2.934705677173355 2013 5.04321297014188 2014 2.1795301435376615 2015 1.8828212484572049 2016 1.932565294653287 2017 1.8408312123749226 2018 1.3903245314223796 2019 5.336116759055827 2020 -9.854724024490963 2021 1.8232955583071373 2022 12.519942883777958 2023 0.7247189141565116