Year annual % 1981 8.79921083308773 1982 12.0597652081337 1983 10.6719367588934 1984 11.2499999999997 1985 7.3549257759783 1986 5.950964999466195 1987 0.24878855535475775 1988 2.52365930599391 1989 0.8692870226082889 1990 1.057361394572085 1991 1.741887859326655 1992 -0.0629990064786939 1993 0.553455723541917 1994 31.8410168416385 1995 10.5632886691814 1996 4.914239726372 1997 3.99714170439302 1998 4.471125438510985 1999 0.372266170311928 2000 2.53077516737987 2001 4.36152914007262 2002 3.1886933022058948 2003 1.7609041009962851 2004 0.6943363059457339 2005 5.63163351357613 2006 4.41589984169561 2007 3.6073676798459653 2008 8.45297623326759 2009 3.28244037589321 2010 1.78484420477113 2011 4.018699075344885 2012 4.578374635159481 2013 2.439200761041315 2014 1.76843582146219 2015 2.130817380587915 2016 1.48741550755546 2017 1.7254860237472252 2018 1.78404994832039 2019 1.76011151192938 2020 2.43760882182236 2021 3.65353287214209 2022 7.96757361617945 2023 4.670083707550756