Year annual % 1985 4.03225805628628 1986 1.07396640826829 1987 3.64304545817706 1988 3.12186849610723 1989 3.99162804604575 1990 5.83668775158166 1991 5.55555555555579 1992 3.8733753699648 1993 5.2155599603571 1994 6.3110797127044 1995 3.36139107320899 1996 3.22528797213979 1997 2.99994809778412 1998 1.86948853615541 1999 2.28037198258753 2000 4.04402131190513 2001 2.88360430316264 2002 3.31524678585423 2003 3.65636507938418 2004 2.52912946932762 2005 3.39778677828806 2006 3.60802438784541 2007 5.39256784475517 2008 8.95598705177784 2009 -2.13542872046937 2010 2.07814071860787 2011 4.31629742195203 2012 0.627471992893373 2013 -2.37206524252261 2014 0.421440918881214 2015 0.474763597342641 2016 -0.931195987079561 2017 -1.02828178762012 2018 3.62604141352961 2019 4.25746204335428