Year | Value | 2022 | 84.887927452274 | 2021 | 84.827304160315 | 2020 | 84.765170381309 | 2019 | 84.850551903758 | 2018 | 84.746294113221 | 2017 | 84.645950076414 | 2016 | 84.537002314665 | 2015 | 84.441327232921 | 2014 | 84.363665351349 | 2013 | 84.31748158071 | 2012 | 84.322334515762 | 2011 | 84.352525185136 | 2010 | 84.398368908311 | 2009 | 84.445126344158 | 2008 | 84.528241249096 | 2007 | 84.460131645294 | 2006 | 84.342767555079 | 2005 | 84.236882513245 | 2004 | 84.127293211121 | 2003 | 84.025919732441 | 2002 | 83.917074607605 | 2001 | 83.818999900643 | 2000 | 83.688302662632 | 1999 | 83.543245898274 | 1998 | 83.427812751738 | 1997 | 83.317148666282 | 1996 | 83.214835333949 | 1995 | 83.146155046015 | 1994 | 83.07495781356 | 1993 | 83.015740199871 | 1992 | 82.982382091326 | 1991 | 82.959676285406 |
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