Year | Value | 2022 | 97.321346026623 | 2021 | 97.301963249681 | 2020 | 97.274571391179 | 2019 | 97.321467261141 | 2018 | 97.314690347915 | 2017 | 97.309142700312 | 2016 | 97.309033912508 | 2015 | 97.300033438564 | 2014 | 97.275398487104 | 2013 | 97.286220941548 | 2012 | 97.302020516459 | 2011 | 97.320453702623 | 2010 | 97.340615797458 | 2009 | 96.271178707224 | 2008 | 96.181265341726 | 2007 | 96.107181896496 | 2006 | 95.913554665072 | 2005 | 95.950921588372 | 2004 | 95.664554967985 | 2003 | 95.877543551651 | 2002 | 95.776080566936 | 2001 | 96.2864519604 | 2000 | 96.158890305422 | 1999 | 95.946242614564 | 1998 | 95.77949128182 | 1997 | 95.700660104869 | 1996 | 95.547936544638 | 1995 | 95.381065826952 | 1994 | 95.167322565391 | 1993 | 94.949154879874 | 1992 | 94.687781813891 | 1991 | 94.470394435001 |
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