Year % 1984 15.812373525090694 1985 10.803316810309987 1986 38.49441330210025 1987 -1.6888261081223577 1988 7.926483104739884 1989 9.85225030192531 1990 -12.00501714498706 1991 19.744770427040798 1992 7.987241263593692 1993 15.092779215732396 1994 8.87342555532323 1995 7.395702709441215 1996 1.7548634346536656 1997 11.676480847604624 1998 27.448454381152203 1999 -0.45757736194711823 2000 -6.189609630250958 2001 14.831824147879379 2002 3.9357708439104337 2003 -1.7703705462121366 2004 -4.484766093928884 2005 -12.396265350649575 2006 -5.577276690904367 2007 -0.8269405018181367 2008 -20.1290039957665 2009 43.3425658517567 2010 -18.864969610316425 2011 -8.07973379393509 2012 2.2146942392579123 2013 7.911581547463315 2014 3.40789682865649 2015 29.71419215371617 2016 15.459809348632087 2017 -1.9993678487202404 2018 -5.804866112383938 2019 8.30081839376837 2020 18.214354722713214 2021 -6.387003363831275