Year annual % growth 1961 22.105049190991437 1962 23.276533690245145 1963 19.579977637698605 1964 7.602695792792673 1965 13.58658007749358 1966 9.569514151187235 1967 4.803505233227085 1968 0.8332475089471103 1969 0.4133405255648057 1970 -1.234599295604383 1971 24.99999999999976 1972 43.33324750894735 1973 32.55821890740302 1974 38.596446057340444 1975 45.56973287965897 1976 54.78258416513964 1977 6.179744563556724 1978 11.111111111111313 1979 43.80953607015056 1980 22.516562897319517 1981 20.486482243539996 1982 20.228811486004645 1983 10.741064569027927 1984 18.88805182829354 1985 13.545327780180244 1986 10.007690028884838 1987 12.993695365501722 1988 38.12350143895969 1989 19.978434216781295 1990 4.455893243438581 1991 41.6446866076659 1992 12.985246203451624 1993 7.808205393804627 1994 9.824135434922553 1995 15.652373230986754 1996 19.910466182426575 1997 9.454067790388947 1998 37.457564919740065 1999 -0.5134983432204621 2000 6.341247839343694 2001 15.157397970509805 2002 19.80973090066705 2003 2.703789628156045 2004 1.2624779425782293 2005 1.6541113135684782 2006 9.55779865482505 2007 15.251005710162872 2008 8.108312757365141 2009 2.457815384262844 2010 3.8708916798945836 2011 2.8107404995794383 2012 8.955295737174865 2013 -7.553972959011148 2014 -0.9723816941735208 2015 7.423495951754958 2016 1.409343711798499 2017 0.20083602764941588 2018 1.135297529103923 2019 -1.228587866710825 2020 -0.5726667713259559 2021 -0.4309969515724248 2022 -0.7332461587089938