| Year | Value | | 2022 | 55.651929529758 | | 2021 | 52.536584755221 | | 2020 | 62.822546950041 | | 2019 | 58.535769474279 | | 2018 | 66.836009196596 | | 2017 | 70.118317292374 | | 2016 | 69.906483946859 | | 2015 | 69.176829357897 | | 2014 | 62.44240466204 | | 2013 | 59.174790701087 | | 2012 | 53.252258700445 | | 2011 | 52.218258133413 | | 2010 | 52.840098830757 | | 2009 | 62.110672451263 | | 2008 | 45.610597540128 | | 2007 | 46.517921793088 | | 2006 | 44.388661401761 | | 2005 | 47.981846800101 | | 2004 | 55.92555491009 | | 2003 | 64.807440516502 | | 2002 | 60.638427376632 |
|