Year | Value | 2023 | 25.471698760986 | 2022 | 22.641510009766 | 2021 | 19.047618865967 | 2020 | 21.42857170105 | 2019 | 19.523809432983 | 2018 | 15.238095283508 | 2017 | 12.380952835083 | 2016 | 13.333333015442 | 2015 | 14.285714149475 | 2014 | 15.865385055542 | 2013 | 17.535545349121 | 2012 | 14.218009948731 | 2011 | 15.639810562134 | 2010 | 16.267942428589 | 2009 | 19.617225646973 | 2008 | 17.961164474487 | 2007 | 18.446601867676 | 2006 | 20 | 2005 | 24.019607543945 | 2004 | 33.333332061768 | 2003 | 28.648649215698 | 2002 | 25.945945739746 | 2000 | 20.218578338623 | 1998 | 21.311475753784 | 1996 | 20.218578338623 |
|