| Year | Value | | 2022 | 79.344887107595 | | 2021 | 84.893132616428 | | 2020 | 90.295000765622 | | 2019 | 96.004021993844 | | 2018 | 91.287579637227 | | 2017 | 92.348545014871 | | 2016 | 89.757816475403 | | 2015 | 91.027444660329 | | 2014 | 97.633039028098 | | 2013 | 98.723570717271 | | 2012 | 96.78979331931 | | 2011 | 99.915398464181 | | 2010 | 98.300593777353 | | 2009 | 96.831121598166 | | 2008 | 84.688087161256 | | 2007 | 84.755100160246 | | 2006 | 85.275039456894 | | 2005 | 89.134126560175 | | 2004 | 96.119831311735 | | 2003 | 96.99655191877 | | 2002 | 102.86951281263 | | 2001 | 108.75380822209 | | 2000 | 112.96475656921 | | 1999 | 108.27513601063 | | 1998 | 111.15006136611 | | 1997 | 114.73565213158 | | 1996 | 111.65410254214 | | 1995 | 117.45044782739 | | 1994 | 105.83058906141 | | 1993 | 110.58621613357 | | 1992 | 112.68899706631 | | 1991 | 75.793700589785 | | 1990 | 66.925064599483 |
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