Year annual % growth 1961 21.874997191439107 1962 3.8461592054299842 1963 8.641968319805045 1964 11.363635236073094 1965 1.0204126334439678 1966 10.683755882451337 1967 22.779929362711187 1968 5.660373675059205 1969 7.440479367466054 1970 6.37118963247741 1971 9.895836968021982 1972 32.93838424092553 1973 -15.461288307141302 1974 20.04247758310531 1975 53.95438573688193 1976 12.214327096135108 1977 12.004277667015884 1978 -27.97456388664301 1979 -1.7657737755534413 1980 32.22096656818104 1981 18.75314230315766 1982 4.868755293759165 1983 21.114251094404253 1984 9.23333333474423 1985 -2.1971315225771946 1986 -5.366614655061298 1987 -19.51862841924502 1988 -1.3109381446516863 1989 -9.838107104237167 1990 -2.9005524859532983 1991 3.132764343890287 1992 5.651824910037135 1993 -2.0213663854751474 1994 0.8202245862498359 1995 0.3574976797260092 1996 17.900000016328562 1997 1.6000000034525783 1998 25.199999976753247 1999 -16.899999982820262 2000 -6.34939187558453 2001 16.633455604088155 2002 2.775847510181336 2003 1.1247861269765025 2004 0.5661096026116468 2005 2.540913095636739 2006 10.971794663028959 2007 6.458506315485209 2008 4.875077521357525 2009 6.332947292642515 2010 8.166203219306439 2011 10.219124628340623 2012 5.81631252809467 2013 11.84832160367489 2014 1.6066783033830774 2015 -7.271288837456609 2016 -2.9479695082329016 2017 -1.3357130846330563 2018 -21.46809517329919 2019 6.140699992142487 2020 5.5195006401554565 2021 3.161890391076753 2022 3.835211458796124 2023 3.350162127524257