Year % 1988 0.1763495990361191 1989 1.3448156931948816 1990 2.4739779235596746 1991 -0.41470933087939565 1992 9.497899980745045 1993 3.4190284757562814 1994 6.618854514072215 1995 4.6361675126216175 1996 4.410760448015022 1997 1.25216870884152 1998 4.841254060637942 1999 7.603942145157311 2000 2.7527133272297335 2001 0.9636522185518994 2002 1.9218630146832485 2003 3.955080634326193 2004 7.358812920309773 2005 5.7625309101503035 2006 4.266708400777297 2007 3.4542329850474913 2008 5.129021199709724 2009 6.562244770339103 2010 4.929511313475531 2011 6.27071635883203 2012 5.937038459068452 2013 3.387825757762282 2014 0.7279278507400949 2015 0.12332558257445306 2016 0.7585822511169537 2017 -2.449840291787091 2018 -3.220353562632202 2019 -2.855934221251753 2020 -4.165625787277418 2021 -3.2645011580861714 2022 -3.1304103307255016 2023 0.4819886518490585