| Year | Value | | 2022 | 117.30111278173 | | 2021 | 113.07087804734 | | 2020 | 111.68875094365 | | 2019 | 112.51611796544 | | 2018 | 110.76581501416 | | 2017 | 110.98235020688 | | 2016 | 110.74693441377 | | 2015 | 110.9901210999 | | 2014 | 109.42360030013 | | 2013 | 107.55960831402 | | 2012 | 105.73629238986 | | 2011 | 102.87724358496 | | 2010 | 100 | | 2009 | 96.386325080214 | | 2008 | 93.803050189892 | | 2007 | 85.360862675072 | | 2006 | 83.802353605085 | | 2005 | 80.701525592811 | | 2004 | 77.517680127597 | | 2003 | 75.256833169959 | | 2002 | 72.08299564836 | | 2001 | 68.189694240947 | | 2000 | 67.365953627379 | | 1999 | 65.532231432331 | | 1998 | 62.089733345777 | | 1997 | 58.808431598196 | | 1996 | 54.916496261452 |
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