Year Number 1996 79.2553176879883 1998 91.4893646240234 2000 78.8359756469727 2002 91.0052947998047 2003 86.4321594238281 2004 75.2427215576172 2005 80.0970840454102 2006 80.6763305664063 2007 71.9806747436523 2008 71.6346130371094 2009 63.9810409545898 2010 69.1943130493164 2011 70.1421813964844 2012 68.7203826904297 2013 70.6161117553711 2014 68.5714263916016 2015 69.523811340332 2016 66.1904754638672 2017 74.2857131958008 2018 70.7547149658203 2019 71.698112487793 2020 74.0566024780273 2021 73.1132049560547 2022 67.9245300292969