| Year | Value | | 2023 | 41.509433746338 | | 2022 | 43.867923736572 | | 2021 | 48.571430206299 | | 2020 | 47.1428565979 | | 2019 | 50.952381134033 | | 2018 | 49.523811340332 | | 2017 | 54.285713195801 | | 2016 | 53.333332061768 | | 2015 | 62.380950927734 | | 2014 | 68.269233703613 | | 2013 | 65.876777648926 | | 2012 | 65.876777648926 | | 2011 | 64.928909301758 | | 2010 | 64.11483001709 | | 2009 | 62.679424285889 | | 2008 | 63.106796264648 | | 2007 | 65.048545837402 | | 2006 | 58.048782348633 | | 2005 | 58.333332061768 | | 2004 | 56.716419219971 | | 2003 | 57.297298431396 | | 2002 | 57.837837219238 | | 2000 | 55.191257476807 | | 1998 | 46.448085784912 | | 1996 | 55.737705230713 |
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