Year annual % 1961 7.692630969826709 1962 5.03645384368221 1963 5.284386198643958 1964 1.2950457174156043 1965 5.90369954873151 1966 4.4023835739021 1967 5.383911505544518 1968 3.9013652929097447 1969 5.372733982097543 1970 3.980611711728727 1971 6.601024457322183 1972 1.7393327398495586 1973 2.5529827353443295 1974 -0.22372469641456405 1975 -0.8511670486217611 1976 -0.8591535387276679 1977 -1.3518321964706672 1978 7.19575110805188 1979 2.081977317443105 1980 10.47416020256668 1981 6.693205510346928 1982 2.9254769323212173 1983 -6.687449590003581 1984 0.36228177303524944 1985 2.578452307361488 1986 1.268007727582443 1987 -3.9577975852124894 1988 -15.246303663136771 1989 -0.5851587211823954 1990 5.829634586657377 1991 7.141626105104976 1992 5.984682258366817 1993 3.3075200341420157 1994 0.7677039266201575 1995 -0.2968661431767714 1996 1.9940953183915582 1997 4.33831481608668 1998 5.213962826979696 1999 1.8713252249465455 2000 0.7097807711455886 2001 -1.3738822302243392 2002 0.26494143730788267 2003 2.2201071493724385 2004 5.476505032889904 2005 5.162896826085756 2006 6.629931852981798 2007 9.92676585437539 2008 7.8547742862461405 2009 -0.5793483378514139 2010 3.950866684789517 2011 9.350391873580449 2012 7.843394039574946 2013 5.038254680824281 2014 3.249830136846626 2015 3.907928880747093 2016 3.1484327588663774 2017 3.793677976471031 2018 1.9630377271513595 2019 1.6401875183941002 2020 -18.85438223021147 2021 14.321793185275467 2022 9.368782853473363 2023 5.88753215857902