Year | Value | 2022 | 95.407499766781 | 2021 | 94.564824591617 | 2020 | 93.831957781099 | 2019 | 93.483452031839 | 2018 | 93.490026419515 | 2017 | 93.275283629061 | 2016 | 93.045487279328 | 2015 | 92.975094717527 | 2014 | 92.788297186663 | 2013 | 93.013686444837 | 2012 | 93.054899797359 | 2011 | 92.984875654759 | 2010 | 92.28364317414 | 2009 | 91.917698001871 | 2008 | 92.218396078413 | 2007 | 92.002223081973 | 2006 | 91.534117111911 | 2005 | 92.567917868618 | 2004 | 92.485350858505 | 2003 | 92.580542736662 | 2002 | 92.703429408658 | 2001 | 92.658651122062 | 2000 | 92.48848761302 | 1999 | 92.276122950325 | 1998 | 91.477571532802 | 1997 | 91.546781864142 | 1996 | 91.164455895889 | 1995 | 90.448114004637 | 1994 | 90.362321304532 | 1993 | 90.189457637474 | 1992 | 90.135614704036 | 1991 | 90.143074909448 |
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