Year annual % 1961 5.062827900688191 1962 1.5345799604154848 1963 5.6420649793486035 1964 8.231251672902701 1965 5.66570163304911 1966 5.9828751451028666 1967 3.2792879190749744 1968 2.031464938957427 1969 2.0673398274801684 1970 3.859552080913687 1971 8.99174877486901 1972 5.553683675971314 1973 6.713594298754714 1974 3.735693496045883 1975 8.220700514105857 1976 8.44952547852462 1977 8.618019444172418 1978 9.899775711527852 1979 8.18975797080374 1980 8.734904435808133 1981 8.0547582837101 1982 9.220783648254496 1983 0.012126945829706415 1984 24.066353134175046 1985 -5.113194829058813 1986 -16.932826082525878 1987 -3.133081809878007 1988 9.36193041017259 1989 -1.2526106495420066 1990 8.012329034885468 1991 3.073498966116503 1992 -12.906553829435737 1993 -1.3146037189081312 1994 43.54496377335886 1995 8.833127266458547 1996 11.45845495083158 1997 3.7827854649935517 1998 6.749408829004338 1999 -7.572866284664514 2000 5.289804859902404 2001 13.797652751767032 2002 1.907819440124257 2003 0.07900469209123173 2004 9.73425647986646 2005 28.111933676050683 2006 9.984427920414234 2007 3.3019342625677552 2008 8.64881979028074 2009 -9.558754477563255 2010 6.3911950513066955 2011 8.580398958147882 2012 1.0972457122318673 2013 -4.141367404177444 2014 0.645785332472741 2015 -8.480017258326782 2016 -1.4008392794990385 2017 0.028251913515504157 2018 5.014657778075076 2019 2.8560341198774495 2020 -5.454896407637179 2021 7.166576288978206 2022 15.14512189145701 2023 -0.9366041654893138