Year annual % 1990 15.4454404639221 1991 15.6545219222237 1992 14.7140252811412 1993 12.9815632885068 1994 9.81218708489008 1995 10.8383194557783 1996 8.02208799242219 1997 8.13743291858027 1998 8.07573837316775 1999 6.88883410122743 2000 9.18219141567356 2001 7.80047496305909 2002 12.537957905723 2003 6.39576358713289 2004 6.042171590455 2005 5.59700978064043 2006 6.06463701450308 2007 8.24576476611674 2008 7.85033172851331 2009 8.6630418315964 2010 6.12843243160444 2011 5.53905643151262 2012 4.68520638813985 2013 5.84411140067347 2014 5.36654618468381 2015 5.54552812339873 2016 6.9521719608848 2017 5.47332197481477 2018 3.99329508509443 2019 4.61352469052481 2020 5.25956789820643 2021 6.50012837608445 2022 4.75948416121869 2023 4.52476355727447