Year | Value | 2022 | 26.125677529219 | 2021 | 27.037147887324 | 2020 | 25.640261008377 | 2019 | 25.104878401135 | 2018 | 24.498562260743 | 2017 | 25.154907439731 | 2016 | 24.816966357779 | 2015 | 25.008678216059 | 2014 | 24.577123359241 | 2013 | 24.234111842163 | 2012 | 24.731589245633 | 2011 | 23.500644833469 | 2010 | 25.351292130342 | 2009 | 25.002735856465 | 2008 | 27.427341188021 | 2007 | 28.779584869825 | 2006 | 27.848000965727 | 2005 | 27.316822170973 | 2004 | 27.194347575427 | 2003 | 26.224228559027 | 2002 | 26.37176774741 |
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