Year Number 1996 53.1914901733398 1998 53.7234039306641 2000 69.8412704467773 2002 74.6031723022461 2003 71.8592987060547 2004 72.3300933837891 2005 64.0776672363281 2006 60.386474609375 2007 85.5072479248047 2008 85.5769195556641 2009 61.1374397277832 2010 51.6587677001953 2011 54.502368927002 2012 59.7156410217285 2013 45.0236968994141 2014 19.5238094329834 2015 21.4285717010498 2016 32.8571434020996 2017 40 2018 48.113208770752 2019 51.4150924682617 2020 47.6415100097656 2021 45.2830200195313 2022 45.7547187805176