Year Number 1996 65.4255294799805 1998 46.8085098266602 2000 63.4920616149902 2002 82.0105819702148 2003 81.9095458984375 2004 66.019416809082 2005 71.3592224121094 2006 72.9468612670898 2007 64.2512054443359 2008 51.4423065185547 2009 54.9763031005859 2010 64.4549789428711 2011 57.8199043273926 2012 61.1374397277832 2013 65.4028472900391 2014 61.9047622680664 2015 60.476188659668 2016 61.9047622680664 2017 62.8571434020996 2018 59.9056587219238 2019 59.9056587219238 2020 60.8490562438965 2021 67.9245300292969 2022 60.3773574829102