Year Number 1996 74.4680862426758 1998 72.3404235839844 2000 74.0740737915039 2002 82.0105819702148 2003 94.4723587036133 2004 69.4174728393555 2005 74.271842956543 2006 64.2512054443359 2007 73.4299545288086 2008 80.288459777832 2009 80.568717956543 2010 56.3981056213379 2011 58.2938385009766 2012 60.6635055541992 2013 60.1895751953125 2014 62.3809509277344 2015 60.476188659668 2016 61.9047622680664 2017 58.5714302062988 2018 69.3396224975586 2019 70.7547149658203 2020 26.4150943756104 2021 33.0188674926758 2022 30.1886787414551