Year % 1996 38.28336 1999 39.72181 2000 37.97902 2001 0 2002 0.1170503 2003 0.050505 2006 0 2007 0.0516983 2010 0.210063 2011 0.2117659 2012 0 2013 0 2015 0 2016 0 2017 0 2018 0 2019 0 2020 0 2021 0