Year Number 1996 72.8723373413086 1998 81.3829803466797 2000 92.5925903320313 2002 59.7883605957031 2003 71.8592987060547 2004 74.7572784423828 2005 67.4757308959961 2006 72.4637680053711 2007 83.5748825073242 2008 77.4038467407227 2009 72.0379180908203 2010 75.8293838500977 2011 68.7203826904297 2012 63.5071105957031 2013 64.4549789428711 2014 60.9523811340332 2015 51.9047622680664 2016 56.1904754638672 2017 58.5714302062988 2018 61.7924537658691 2019 65.5660400390625 2020 66.9811325073242 2021 66.9811325073242 2022 69.3396224975586