Year annual % 1973 11.608260197485066 1974 18.30307965326125 1975 0.7218865083553823 1976 9.913249301882018 1977 -2.1750256893720064 1978 -5.81694465077652 1979 0.32937396430379806 1980 -10.547091558319138 1981 -2.949288915299931 1982 7.838131416818001 1983 2.298018719592676 1984 -0.07965408849889855 1985 -0.21838545168729695 1986 -5.441451018206678 1987 5.282838230360952 1988 -7.6238798875009905 1989 2.4145527695277593 1990 1.9345615755513137 1991 1.292820381390598 1992 1.148934838758791 1993 3.770968161843456 1994 0.3873601813418617 1995 -0.5401802930532824 1996 3.9561086037106037 1997 -0.029377055117024042 1998 1.1474444995551494 1999 4.159314204611846 2000 1.8662950190063015 2001 2.3014083362556477 2002 2.9467910339336214 2003 2.750851495235281 2004 3.8430001851851046 2005 3.6888425152423707 2006 3.9177270294705124 2007 5.821267644829092 2008 2.9218705078528586 2009 0.10229630694178127 2010 2.931482028180966 2011 30.07961457113464 2012 -2.1834787725441345 2013 -2.3568822604672732 2014 -1.2259767680647968 2015 -2.6913773947387085 2016 4.551230141958101 2017 1.5383199295154242 2018 -1.361759079755629 2019 -2.29976469339222 2020 -6.437020039036028 2021 6.310951342363808 2022 2.4904007585977723