Year Number 1996 9.2391300201416 1998 9.2391300201416 2000 9.2391300201416 2002 18.9189186096191 2003 20 2004 25.3731346130371 2005 17.1568622589111 2006 24.5098037719727 2007 24.7572822570801 2008 33.009708404541 2009 40.1913871765137 2010 45.4545440673828 2011 46.9194297790527 2012 48.3412322998047 2013 52.6066360473633 2014 60.0961532592773 2015 58.0952377319336 2016 53.8095245361328 2017 58.0952377319336 2018 57.1428565979004 2019 53.3333320617676 2020 51.9047622680664 2021 53.8095245361328 2022 58.0188674926758