Year % 1993 0 1994 0.0055281 1996 0.4515675 1997 0 2001 1.434132 2002 1.003786 2005 1.315806 2007 0.5012884 2008 0.2541887 2009 0.4320963 2010 0.3986228 2011 0.6735836 2012 0.4612091 2013 0.5258274 2014 0 2015 1.3366 2016 1.745281 2017 1.443795 2018 0.4363561 2019 0.2939864 2020 0.3177217 2021 0.285797