Year % 1976 -3.167914566354915 1977 -3.1196802406041275 1978 0.5650921174838259 1979 -9.311642225715108 1980 0.8026859918938416 1981 17.584790467039635 1982 -7.801484773611779 1983 2.0300751883554358 1984 6.2380658655692285 1985 3.06872172817116 1986 1.8824585794858784 1987 3.435567132329151 1988 3.158634195745684 1989 -0.6749110550174126 1990 1.0675352992736629 1991 3.2046387955718294 1992 1.670924890094647 1993 9.101241383791857 1994 7.435419400709648 1995 4.552157631002472 1996 7.913220488012748 1997 3.5634527583320135 1998 10.391898920456653 1999 11.93582240306063 2000 8.919600974251 2001 11.214513375635724 2002 10.300031945092721 2003 6.3270259482789 2004 1.5269034278104254 2005 6.523640991017676 2006 4.880796717803931 2007 -0.07762859477411427 2008 0.10785315564985479 2009 0.7100363205329446 2010 0.8187216180421439 2011 -0.5638780543028181 2012 -6.262719502904268 2013 3.2921571525961393 2014 0.41412913968231396 2015 1.541068460107186 2016 6.9220113553922005 2017 -8.758194081235334 2018 -2.35870301322626 2019 2.199095782090518 2020 4.887815430929619 2021 4.366206698708686 2022 0.14266965247703695 2023 -5.642821963356138