| Year | Value | | 2022 | 127.48410944339 | | 2021 | 118.55559472098 | | 2020 | 116.15923392376 | | 2019 | 115.43661261066 | | 2018 | 113.80762042788 | | 2017 | 112.4501692879 | | 2016 | 109.77978920926 | | 2015 | 110.31973569244 | | 2014 | 109.26100371341 | | 2013 | 108.08349716033 | | 2012 | 106.9503604194 | | 2011 | 103.45674967235 | | 2010 | 100 | | 2009 | 96.739842726081 | | 2008 | 97.2750109218 | | 2007 | 92.349279161206 | | 2006 | 91.059824159022 | | 2005 | 89.460463084316 | | 2004 | 87.621505024028 | | 2003 | 85.878112712975 | | 2002 | 84.199568588904 | | 2001 | 82.21999235474 | | 2000 | 81.082568807339 | | 1999 | 80.461582568807 | | 1998 | 79.569380733945 |
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