Year | Value | 2022 | 71.014147054602 | 2021 | 69.383706355928 | 2020 | 69.474219881436 | 2019 | 73.857785962235 | 2018 | 75.075008027058 | 2017 | 75.313505815943 | 2016 | 75.572478948228 | 2015 | 76.678811646934 | 2014 | 77.572469840398 | 2013 | 75.966732736443 | 2012 | 74.57198363292 | 2011 | 72.884268674848 | 2010 | 73.829375876593 | 2009 | 75.531571116568 | 2008 | 75.771635972715 | 2007 | 75.443757703134 | 2006 | 73.569352360054 | 2005 | 74.022084378194 | 2004 | 74.785057719012 | 2003 | 74.602167647817 | 2002 | 74.517599313802 | 2001 | 74.447038023207 | 2000 | 74.890823624606 | 1999 | 74.801267191363 | 1998 | 74.851554080682 | 1997 | 74.962990880381 | 1996 | 75.037348205584 | 1995 | 75.102992008992 | 1994 | 75.193521847542 | 1993 | 75.304922411218 | 1992 | 75.531246428896 | 1991 | 75.720382054868 |
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