Year annual % 1961 1.9232739774043495 1962 0.24434100504491596 1963 4.077740584016638 1964 4.910400208346061 1965 1.4762808636090057 1966 1.0090457848713044 1967 2.2237329688818477 1968 4.960532906806208 1969 1.5161515476660412 1970 2.2998746684796743 1971 3.0733143191695262 1972 3.968556097875009 1973 6.3182449484203715 1974 -2.5458770775111645 1975 -1.4663352465825312 1976 2.935589090661381 1977 2.491437859712846 1978 4.1986754310201775 1979 3.655965743025561 1980 -2.1483872959745725 1981 -0.8222853011370717 1982 2.031455705423113 1983 4.186321287226818 1984 2.1073801890933623 1985 3.911319127758972 1986 2.9117103413460796 1987 5.168872130984852 1988 5.497880589864195 1989 2.3109288181537124 1990 0.43308115010458437 1991 -1.408485800169501 1992 0.12993299843498107 1993 2.24441063359761 1994 3.581967504423588 1995 2.2607836300546893 1996 2.3211538954574564 1997 4.655038715443354 1998 3.1133530560383633 1999 2.723119634291706 2000 3.9466604151330245 2001 2.1845967104060264 2002 1.3619732399821487 2003 2.6673961662178556 2004 1.8454026649850448 2005 2.035842097738353 2006 1.6364455869846637 2007 1.8243644619552697 2008 -1.0079010322068456 2009 -5.3337193941918315 2010 1.440384158065271 2011 0.3577266357623188 2012 0.8095118417729168 2013 1.1128556432920647 2014 2.438574404951382 2015 1.4134986825554847 2016 1.1515493298710737 2017 1.9600209935700832 2018 0.7912147350130709 2019 1.0698333486747913 2020 -10.687168020963043 2021 8.763985822568785 2022 3.168175372232568 2023 -0.7146821651447368