Year annual % 1990 6.53273529225511 1991 2.72953199539077 1992 2.58216189991052 1993 0.155518172723973 1994 3.96621631555998 1995 7.14493870340395 1996 4.23450361623648 1997 3.80023220091314 1998 4.73621256184072 1999 3.78103773665002 2000 3.44665934914798 2001 3.26116013222439 2002 3.8928674350377 2003 5.81581664789621 2004 4.5621363796936 2005 4.58636070641845 2006 5.87593581109938 2007 6.47126010502515 2008 7.86096609394262 2009 6.76435468091874 2010 7.14466302810841 2011 7.85945085272492 2012 8.16457367624635 2013 7.17495343232414 2014 5.66878852513904 2015 5.87277704102323 2016 6.72785241008975 2017 5.04759758203714 2018 5.80553876704575 2019 3.65813755162172 2020 3.84106338588026 2021 4.1211747067957 2022 5.04902187883131 2023 6.89712404003441