Year Number 1996 39.6984939575195 1998 43 2000 40.7960205078125 2002 42.7860679626465 2003 42.7860679626465 2004 63.9423065185547 2005 68.8995208740234 2006 66.9856491088867 2007 67.464111328125 2008 56.25 2009 50.7108993530273 2010 45.971565246582 2011 43.1924896240234 2012 46.0093879699707 2013 47.8873252868652 2014 31.25 2015 29.0476188659668 2016 31.9047622680664 2017 32.8571434020996 2018 33.3333320617676 2019 36.1904754638672 2020 38.5714302062988 2021 51.4285697937012 2022 55.1886787414551