Year Number 1996 62 1998 63.1840782165527 2000 54.2288551330566 2002 54.2288551330566 2003 61.1940307617188 2004 56.25 2005 50 2006 46.1538467407227 2007 46.1538467407227 2008 41.8269233703613 2009 38.8625602722168 2010 36.4928894042969 2011 34.7417831420898 2012 35.6807518005371 2013 38.4976539611816 2014 41.3793106079102 2015 39.4088668823242 2016 32.019702911377 2017 32.019702911377 2018 23.3009700775146 2019 22.2222213745117 2020 23.1884059906006 2021 19.8067626953125 2022 17.8743953704834