| Year | Value | | 2019 | 146.22084523629 | | 2018 | 144.83217588274 | | 2017 | 141.583897134 | | 2016 | 140.84729860733 | | 2015 | 142.94841571618 | | 2014 | 142.03068640427 | | 2013 | 140.83522322165 | | 2012 | 126.89317286186 | | 2011 | 113.49984023858 | | 2010 | 100 | | 2009 | 93.662796889978 | | 2008 | 93.039727340505 | | 2007 | 85.307274470125 | | 2006 | 77.340504846097 | | 2005 | 74.411545425498 | | 2004 | 73.593426435259 | | 2003 | 71.285546916605 | | 2002 | 66.519331132176 |
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