| Year | Value | | 2024 | 98.08540344 | | 2023 | 98.15229797 | | 2022 | 98.03800201 | | 2021 | 99.65280151 | | 2020 | 99.65284913 | | 2019 | 99.652804208639 | | 2018 | 99.652849126118 | | 2017 | 97.388849165416 | | 2016 | 95.124662166115 | | 2015 | 92.884826453548 | | 2014 | 91.48999786 | | 2013 | 85.3 | | 2012 | 69.3 | | 2011 | 69 | | 2010 | 69 | | 2009 | 53.09999847 | | 2008 | 44.29999924 | | 2007 | 37 | | 2006 | 28.97410011 | | 2005 | 24.73349953 | | 2004 | 20.701647851169 | | 2003 | 19.242336421002 | | 2002 | 10.226128928112 | | 2001 | 6.1702685609391 | | 2000 | 4.8636791787516 | | 1999 | 4.07 | | 1998 | 3.52 | | 1997 | 3.08 | | 1996 | 0.93 | | 1995 | 0.19 |
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