Year annual % 1961 1.456902890235142 1962 0.5990206081068408 1963 -0.00246295720181422 1964 4.3795845237431195 1965 2.45082026821828 1966 -7.47426560407915 1967 2.0392460741717144 1968 3.398070222182639 1969 2.3516237402015747 1970 2.9053795805739355 1971 1.5744303406650175 1972 27.7112179206904 1973 12.548073998237058 1974 20.9343671492247 1975 13.507236450384937 1976 9.13417048581313 1977 43.805247688939204 1978 -0.4552394659399255 1979 17.00996835633501 1980 31.035921523384957 1981 7.346651798633502 1982 1.7261242842132987 1983 3.1870046211329566 1984 3.133245193621079 1985 2.2794111930372054 1986 5.746677738989959 1987 3.673823365122658 1988 3.928752535258724 1989 2.1257658830517556 1990 6.37017751588742 1991 -2.0431566911109087 1992 4.66825525992283 1993 3.0283126877492634 1994 2.6560335930587655 1995 -2.072930383361907 1996 -6.080267155637216 1997 0.8746556082079024 1998 10.41178364451541 1999 2.0566347441652653 2000 1.2519451512374076 2001 6.15676158548635 2002 3.6131613542673904 2003 5.946834789323447 2004 24.674119952404 2005 0.45864511054863044 2006 1.4423444477168061 2007 11.079395686120137 2008 31.926316024995174 2009 28.181963581291598 2010 -2.1197104463201555 2011 1.0643813812327068 2012 10.43728387656975 2013 5.640231518376893 2014 6.435871632306231 2015 -1.0031864187135824 2016 -2.294568468888727 2017 2.3324904875971555 2018 3.4473819658778666 2019 0.1269502386096235 2020 5.230428585383137 2021 2.7500599380233695 2022 1.5223909416356634 2023 -0.9325094931598557