Year | Value | 2021 | 61.9941698 | 2020 | 59.50638944 | 2019 | 57.11844188 | 2018 | 49.8 | 2017 | 47.0826258 | 2016 | 44.57574032 | 2015 | 41.59 | 2014 | 38.7 | 2013 | 33.6 | 2012 | 31 | 2011 | 30.7 | 2010 | 28.2 | 2009 | 27.2 | 2008 | 26.3 | 2007 | 24.6 | 2006 | 24 | 2005 | 17 | 2004 | 9.8 | 2002 | 5.684251214 | 2000 | 5.963835303 | 1999 | 4.076740564 | 1998 | 2.091516391 | 1997 | 1.288582302 | 1996 | 0.882807327 | 1995 | 0.04539718 |
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