Year % 2000 15.359 2001 10.556 2003 17.318 2007 27.65 2008 18.695 2009 17.485 2010 12.802 2011 14.639 2012 16.673 2013 22.47 2014 15.887 2015 25.094 2016 33.142 2017 20.152 2019 29.234 2020 24.532 2021 24.619