Year % 2001 0 2002 0.9266409 2007 13.83423 2008 13.71217 2009 15.12507 2010 30.50688 2011 36.51537 2012 0.1605136 2013 37.79437 2014 36.51814 2015 39.51332 2016 39.63783 2020 31.10236