Year % 1996 15.55 1999 14.61 2000 14.56 2001 12.89 2002 13.01 2003 13.28 2005 14.17 2006 5.97 2007 4.89 2010 5.46 2011 5.35 2012 5.98 2013 9.94 2014 6.78 2015 6.55 2016 8.07 2019 26.83 2020 8.43