Year % 1995 94.20375 1998 88.08189 1999 62.53621 2000 60.88471 2001 59.08612 2002 55.51934 2003 53.85023 2004 51.31622 2005 43.70631 2006 44.30032 2007 53.85261 2008 52.21773 2009 45.79371 2010 46.14555 2011 45.79525 2012 45.61914 2013 46.35994 2014 49.56579 2015 49.78357 2016 50.48387 2018 51.45829 2019 51.69231 2020 51.01868 2021 50.89871