Year % 1996 10.53 1999 9.83 2001 9.89 2002 14.14 2003 13.25 2006 6.72 2007 6.73 2008 6.37 2009 9.33 2010 9.33 2011 6.49 2012 7 2013 9.2 2014 9.2 2015 9.43 2016 10.5 2017 9.62 2018 12.67 2019 12.14 2020 41.56 2021 42.3