Year % 1995 15.4176 1997 47.76907 2002 21.91359 2006 13.81706 2007 9.34599 2008 13.69364 2009 9.682406 2010 6.625568 2011 11.58962 2012 5.088578 2013 5.748046 2014 11.37468 2015 11.24374 2016 4.774698 2017 6.929677 2018 2.881716 2019 7.992684 2020 2.637605 2021 3.058433