Year annual % 1991 11.8960953011251 1992 10.5274440119592 1993 10.37644992635909 1994 30.136169035471347 1995 18.235168327484402 1996 11.4775285982865 1997 7.08700591205709 1998 5.9765085214186 1999 4.843531588263975 2000 3.82260088086307 2001 5.37080293380438 2002 4.705791237460341 2003 5.48825363407078 2004 3.28244220949084 2005 7.28550640490916 2006 6.739930603875055 2007 4.61743772241997 2008 11.5810751748252 2009 4.07548080120173 2010 3.48050763735842 2011 5.442024704878355 2012 5.91200602491155 2013 3.433585268307445 2014 2.23597407904679 2015 2.0764779016519697 2016 3.0382064350688047 2017 3.48854825371271 2018 3.2145392548909246 2019 2.3775873278977553 2020 2.8981937602627 2021 4.25936417542868 2022 9.507657429728315 2023 5.88585897042164