Year % 2001 6.056165335641318 2002 7.8775867919990255 2003 13.83148815542707 2004 16.91146723470306 2005 23.93615904532495 2006 25.542580541393388 2007 18.74942307635045 2008 50.949328725887156 2009 40.250338745862855 2010 51.999005860499246 2011 52.590110601554876 2012 44.73352418317293 2013 26.109080659776335 2014 29.05267291057962 2015 34.80845224018674 2016 21.33705206851533 2017 15.604434021126032 2018 23.827627610180734 2019 26.109678460863034