Year Number 1996 62 1998 57.7114410400391 2000 58.2089538574219 2002 65.1741256713867 2003 66.1691513061523 2004 64.9038467407227 2005 63.9423065185547 2006 61.0576934814453 2007 58.1730766296387 2008 58.1730766296387 2009 55.9241714477539 2010 57.3459701538086 2011 58.2159614562988 2012 37.0892028808594 2013 43.6619720458984 2014 49.7536964416504 2015 47.7832527160645 2016 48.2758636474609 2017 46.305419921875 2018 39.8058242797852 2019 37.6811599731445 2020 33.3333320617676 2021 32.8502426147461 2022 28.9855079650879