| Year | Value | | 2021 | 1,374.9348856051 | | 2020 | 1,357.8129688476 | | 2019 | 1,413.8263934239 | | 2018 | 1,305.9445446384 | | 2017 | 1,199.9352892323 | | 2016 | 1,100.7222987202 | | 2015 | 1,006.8996658824 | | 2014 | 944.83519207964 | | 2013 | 882.13988377857 | | 2012 | 832.73120627305 | | 2011 | 776.74005572516 | | 2010 | 694.43575839657 | | 2009 | 648.53487436224 | | 2008 | 664.40949287379 | | 2007 | 566.24099978942 | | 2006 | 482.40954840256 | | 2005 | 425.60476405987 | | 2004 | 368.0035358156 | | 2003 | 328.70668925483 | | 2002 | 306.71596778523 | | 2001 | 293.80290139046 | | 2000 | 275.99065590017 | | 1999 | 272.85125216177 | | 1998 | 249.67406223893 | | 1997 | 284.80688502473 | | 1996 | 293.2017827341 | | 1995 | 298.58243520583 |
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