Year % 2001 31.742797208784623 2002 21.16294567971327 2003 39.87596874476219 2004 85.1715704726281 2005 51.89151836748622 2006 62.52784910927588 2007 94.71874026024622 2008 86.00902780283143 2009 78.62581963448213 2010 61.59818411483889 2011 44.6241131123362 2012 18.06912323930223 2013 19.344531847331865 2014 13.134391933840476 2015 21.155570458371205 2016 21.773553504917313 2017 22.90118791028172 2018 21.741749316912372 2019 16.988058844194967 2020 16.764459623057245