Year Number 1996 75 1998 75 2000 83.0687866210938 2002 80.4232788085938 2003 84.9246215820313 2004 86.8932037353516 2005 78.6407775878906 2006 73.4299545288086 2007 79.22705078125 2008 79.3269195556641 2009 75.8293838500977 2010 65.8767776489258 2011 61.6113739013672 2012 61.6113739013672 2013 62.5592422485352 2014 70 2015 70.9523773193359 2016 71.9047622680664 2017 71.4285736083984 2018 66.5094375610352 2019 66.5094375610352 2020 59.9056587219238 2021 59.4339637756348 2022 62.7358474731445