Year annual % 1991 8.62954923969319 1992 8.902078359111968 1993 8.614567232034418 1994 5.538651565909177 1995 5.1041440417734805 1996 6.417792221246259 1997 2.51129258508702 1998 -3.3825713781360776 1999 -36.28958551044244 2000 55.97048365833359 2001 14.443767638775157 2002 -8.410114103063663 2003 -3.9853122602172277 2004 -1.6449534937328991 2005 0.5065231841962401 2006 -6.550490620071585 2007 7.582964444998936 2008 8.862279486537929 2009 7.824806789864553 2010 7.02673166899244 2011 3.627020759721674 2012 2.5840006156980166 2013 0.9847692447531529 2014 2.4202231166681685 2015 1.0084356425862637 2016 1.785527391649694 2017 -4.599308222139555 2018 -2.1574077025708505 2019 21.61997401700245 2020 29.976696427440572 2021 3.645483361733966 2022 -21.74735831265876 2023 -15.573180279323353