Year annual % growth 1966 11.355641808808144 1967 8.361872562554382 1968 4.406736740373816 1969 0.7393379243944196 1970 3.739164732129467 1971 4.0034371401394395 1972 4.689139593317577 1973 5.6488930723986925 1974 3.5908389062170727 1975 -3.6086147943635325 1976 10.843745100745423 1977 6.565394232616214 1978 4.972280135058355 1979 -9.32143539764509 1980 -20.941189984226114 1981 -14.27418583770445 1982 -6.73516233627592 1983 0.1355545878788007 1984 -0.7992355571774112 1985 -1.0147087181042167 1986 1.3374787753770363 1987 2.9681685387607786 1988 3.4110541207921727 1989 2.647532628727717 1990 4.904266930509621 1991 3.037097697980016 1992 5.215980904504832 1993 7.417858571410193 1994 5.687520930297836 1995 4.188868320783158 1996 -0.5796677562629213 1997 5.519908827119949 1998 5.069882516379721 1999 1.418603045697182 2000 1.8946745823391211 2001 1.4903345206891174 2002 0.4098479394065322 2003 -0.027097983460762975 2004 -1.536167986325367 2005 -1.2383579624819276 2006 2.9550827230831374 2007 2.0665888488560853 2008 5.399326975962907 2009 -4.162222152291179 2010 1.8930970179455073 2011 4.153004260910365 2012 1.5739769331937907 2013 0.7231416417672847 2014 2.564102564102555 2015 3.049999999999997 2016 1.3100436681222618 2017 1.264367816091962 2018 0.48240635641316487 2019 1.948602089805135 2020 -14.15512465373962 2021 11.734968269334203 2022 -1.6076241817481645 2023 -3.365619802367675