Year Number 2004 40.7960205078125 2005 77.9411773681641 2006 73.0392150878906 2007 66.019416809082 2008 66.019416809082 2009 65.0717697143555 2010 63.6363639831543 2011 62.0853080749512 2012 59.7156410217285 2013 61.1374397277832 2014 41.8269233703613 2015 56.1904754638672 2016 57.6190490722656 2017 52.3809509277344 2018 48.5714302062988 2019 49.0476188659668 2020 48.5714302062988 2021 50.9523811340332 2022 52.8301887512207