Year % 1994 25.24181269320554 1995 25.34473234308566 1996 22.819077842089417 1997 27.75467856872749 1998 16.321452377652466 1999 21.892738020854225 2000 14.203538638480415 2001 16.42689975456009 2002 22.65700467993085 2003 37.02078190327444 2004 24.081313594687156 2005 19.13485082575201 2006 23.866004104736888 2007 14.458350246076128 2008 15.683124648378028 2009 27.987235388133925 2010 24.301762401232217 2011 11.705847387063937 2012 11.794269836530711 2013 14.31208515742782 2014 17.81994433098742 2015 17.8457424475867 2016 13.386599075218331 2017 14.509388613732574 2018 13.492962636288533 2019 12.05332606728888 2020 11.089000085341102 2021 3.745212561943677