Year % 1988 1.728664 1993 0.100276 1995 0.4091446 1996 0.0595282 1997 0.705022 1998 0.0048879 1999 0.7273552 2000 0 2001 0 2002 0.0167249 2003 0.0025731 2004 0.8728915 2005 0.859027 2006 0.8321837 2007 0.9798702 2008 1.03253 2009 1.087513 2010 0.0013989 2011 0.0027528 2012 0.0020391 2013 0.0019634 2014 0 2015 0.001315 2016 0.0020036 2017 0.0033735 2018 0.0006724 2019 1.27141 2020 2.136084 2021 1.544968