Year % 2001 0.1 2004 3.846154 2005 11.42857 2006 8.900523 2007 5.660378 2008 6.666667 2009 5.472637 2010 8.571428 2011 10.12658 2012 8.8 2013 0.5649717 2014 0 2015 1.085568 2016 1.569507 2017 1.041667 2018 1.621385 2019 1.596204 2020 1.201201 2021 1.200171