Year % 1996 19.45734 1999 20.83575 2000 20.60314 2001 0.9076099 2002 1.195029 2003 1.088008 2006 0 2007 1.338199 2010 3.966438 2011 3.665339 2012 0.4536862 2013 0.4536862 2015 0 2016 0 2017 0 2018 0 2019 0 2020 0 2021 0