Year annual % 1996 31.9473377218567 1997 23.4354278497005 1998 10.4573825846721 1999 37.0309258369344 2000 18.7007342838023 2001 6.9196798942304 2002 2.13420986310243 2003 2.97461295184355 2004 4.11065084723381 2005 4.3386739184431 2006 5.55212333162542 2007 10.2301032660484 2008 24.5201024234102 2009 6.83656248105368 2010 7.96772225579684 2011 16.6363262731495 2012 2.76844236540957 2013 6.61375202358082 2014 7.5342472977589 2015 6.50331838993384 2016 0.388838296895799 2017 3.1753098637994 2018 1.54266145238436 2019 1.13362257718804 2020 6.32542296338078 2021 11.9050398185147 2022 13.9229093174176 2023 10.7532770416742