Year Number 2000 84.5771179199219 2002 83.5820922851563 2003 45.2736320495605 2004 44.230770111084 2005 44.9760780334473 2006 45.9330139160156 2007 46.8899536132813 2008 50.480770111084 2009 47.3933639526367 2010 44.0758285522461 2011 48.3568077087402 2012 46.478874206543 2013 46.0093879699707 2014 48.0769233703613 2015 47.6190490722656 2016 51.9047622680664 2017 48.5714302062988 2018 50.476188659668 2019 49.0476188659668 2020 48.0952377319336 2021 52.3809509277344 2022 48.5849075317383