Year | Value | 2021 | 44.399610136452 | 2020 | 44.481481481482 | 2019 | 44.563352826511 | 2018 | 44.64522417154 | 2017 | 44.727095516569 | 2016 | 44.808966861598 | 2015 | 44.890838206628 | 2014 | 44.973489278752 | 2013 | 45.056140350877 | 2012 | 45.138791423002 | 2011 | 45.221442495127 | 2010 | 45.304093567251 | 2009 | 45.386744639376 | 2008 | 45.469395711501 | 2007 | 45.552046783626 | 2006 | 45.634697855751 | 2005 | 45.717348927875 | 2004 | 45.8 | 2003 | 45.882651072125 | 2002 | 45.965302144249 | 2001 | 46.047953216374 | 2000 | 46.130604288499 | 1999 | 46.236062378168 | 1998 | 46.341520467836 | 1997 | 46.446978557505 | 1996 | 46.552436647174 | 1995 | 46.657894736842 | 1994 | 46.763352826511 | 1993 | 46.868810916179 | 1992 | 46.974269005848 | 1991 | 47.079727095517 | 1990 | 47.185185185185 |
|