Year Number 1996 84.5744705200195 1998 72.8723373413086 2000 74.6031723022461 2002 73.5449752807617 2003 69.3467330932617 2004 54.3689308166504 2005 61.1650466918945 2006 63.2850227355957 2007 57.9710159301758 2008 56.730770111084 2009 60.1895751953125 2010 53.554500579834 2011 57.3459701538086 2012 58.2938385009766 2013 58.2938385009766 2014 47.1428565979004 2015 44.761905670166 2016 47.1428565979004 2017 47.6190490722656 2018 40.5660362243652 2019 29.7169818878174 2020 31.6037731170654 2021 32.0754699707031 2022 33.0188674926758