Year % 1995 54.07772 1997 0 1998 47.22308 1999 56.26964 2000 56.14566 2001 56.23216 2002 53.06573 2003 53.21916 2004 27.51875 2005 21.72035 2006 26.04833 2007 21.86606 2008 18.20561 2009 18.45989 2010 18.67639 2011 18.29175 2012 17.35299 2013 18.45662 2014 10.24496 2015 10.49228 2016 9.785949 2017 11.19528 2018 11.46754 2019 8.537388