| Year | Value | | 2021 | 34.453827210366 | | 2020 | 34.453827210366 | | 2019 | 34.453827210366 | | 2018 | 34.453827210366 | | 2017 | 34.453827210366 | | 2016 | 34.453827210366 | | 2015 | 34.453827210366 | | 2014 | 34.453827210366 | | 2013 | 34.453827210366 | | 2012 | 34.453827210366 | | 2011 | 34.453827210366 | | 2010 | 34.453827210366 | | 2009 | 34.37614101598 | | 2008 | 34.298454821594 | | 2007 | 34.220768627207 | | 2006 | 34.143082432821 | | 2005 | 34.065396238435 | | 2004 | 33.987710044048 | | 2003 | 33.910023849662 | | 2002 | 33.832337655275 | | 2001 | 33.754651460889 | | 2000 | 33.676965266502 |
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