Year annual % growth 1966 6.250824495614864 1967 1.8723118486804253 1968 2.5092585586992584 1969 -4.3829947327494665 1970 -0.4680016589720566 1971 1.0742996332775476 1972 -3.690804376209897 1973 0.7709229062677423 1974 12.424608570990841 1975 24.514341988764414 1976 22.72892644052203 1977 7.355730412983135 1978 -4.409481961372293 1979 0.9326658813386928 1980 6.420135129742292 1981 1.573998064439536 1982 0.9769636141312503 1983 6.847745961123806 1984 -0.881032841046931 1985 -3.391872931724805 1986 4.194624106362511 1987 18.325917513942684 1988 1.015754646250116 1989 5.297052303289362 1990 4.618867462098919 1991 7.907791844817311 1992 -1.5019117452537074 1993 5.025741890631409 1994 7.5241446395490215 1995 5.998521177849852 1996 -13.000119823809868 1997 3.6651325050088417 1998 3.841828183371817 1999 3.0626308384853047 2000 -0.5407806955898877 2001 6.644220636002814 2002 3.2061060979826834 2003 10.79968804807352 2004 12.868526207067703 2005 9.124031141025668 2006 5.930882829927015 2007 15.999943478601068 2008 6.613686789368828 2009 -4.813715293850009 2010 4.585500952606793 2011 -3.9108511459476176 2012 -22.434651833099778 2013 1.6382375335807637 2014 4.919557724565763 2015 2.0052558928816353 2016 5.380507575823685 2017 0.5448933493595831 2018 -3.956056234214657 2019 -3.8191106706271256 2020 -3.0421224870641765 2021 -3.900000267783412 2022 -2.999999333956623 2023 -15.999999719737701