Year % 1989 4.057297 1995 0.9556314 1996 0.850372 1997 0.850372 1998 0.8447172 1999 0.8474576 2000 0.9213936 2001 1.200757 2002 1.755872 2003 1.434612 2004 0 2005 0.7364771 2006 0.7578779 2007 0.5022995 2008 0.5646605 2009 0.5158592 2010 0.5751822 2011 0.8544077 2012 0.5464629 2013 0.6278245 2014 0.6278245 2015 0.5421733 2016 0.5542138 2017 0.4760269 2018 0.4711194 2019 0.6809267 2020 0.6650763 2021 0.3084412