Year % 1996 0 1997 0 2000 27.86405 2001 27.8251 2002 0.2502958 2008 0.3043652 2009 0.2978436 2010 0.2945074 2011 0.3467358 2012 0.3057519 2013 0.3331089 2014 0 2015 3.162122 2016 2.75729 2017 3.893011 2018 0.1374421 2019 0.1337817 2020 0 2021 0