Year % 1975 6.271983545557013 1976 -2.703417153829498 1977 0.048779268827813284 1978 -0.07307512645039849 1979 -3.3786274321555663 1980 1.1925586628987428 1981 7.477180663856523 1982 1.9059909984999424 1983 11.231071530073766 1984 8.34499571345454 1985 13.810728027122227 1986 0.32122023095979135 1987 10.636816173258872 1988 -8.848824013572775 1989 11.278776824974976 1990 -12.183087520544174 1991 6.654776511141805 1992 4.256369885212635 1993 -2.5930082557811627 1994 2.955357884514688 1995 0.34701085700469214 1996 10.20065032932748 1997 7.324235889667863 1998 11.260826500624045 1999 11.432666669204231 2000 -9.049525695028093 2001 3.953806755073215 2002 5.816532081181753 2003 8.131186281943496 2004 7.143820949086009 2005 3.8178473843983394 2006 6.8487361981001555 2007 7.763103633978265 2008 3.9916090102185007 2009 1.4622180985372546 2010 6.349809974857937 2011 3.4735352526127237 2012 0.0014956527642514357 2013 1.846377912484175 2014 1.379663264006535 2015 3.312899511281225 2016 2.8050829880900316 2017 8.071839441046418 2018 7.2765628246496625 2019 7.556775393617762 2020 5.263804796115845 2021 8.57149825526351 2022 -0.27121213509627207 2023 7.357852583908013