Year | Value | 2021 | 1,452.9619789121 | 2020 | 1,399.4731051527 | 2019 | 1,403.4939003955 | 2018 | 1,420.7598204063 | 2017 | 1,298.8332964389 | 2016 | 1,241.4932302852 | 2015 | 1,206.7601101614 | 2014 | 1,472.7933883056 | 2013 | 1,458.9504165688 | 2012 | 1,354.6761725731 | 2011 | 1,399.4656356756 | 2010 | 1,271.99788954 | 2009 | 1,300.2232196117 | 2008 | 1,339.116902694 | 2007 | 1,190.099570352 | 2006 | 1,071.0262241717 | 2005 | 1,021.2020260106 | 2004 | 1,006.3903252046 | 2003 | 881.85364025668 | 2002 | 702.8138896805 | 2001 | 640.58846324558 | 2000 | 605.11956635198 | 1999 | 668.83043148958 | 1998 | 653.76462700376 | 1997 | 656.58873271708 | 1996 | 726.52359418873 | 1995 | 745.08001293725 | 1994 | 617.52686945377 | 1993 | 898.61409882375 | 1992 | 927.74173128791 | 1991 | 871.69324367476 | 1990 | 903.62941844567 | 1989 | 742.89260822894 | 1988 | 787.87932551597 | 1987 | 769.07901569622 | 1986 | 649.75489681263 | 1985 | 470.50433714189 | 1984 | 459.09721650557 | 1983 | 488.22014188488 | 1982 | 482.42873764217 | 1981 | 531.57529893516 | 1980 | 591.68112711613 |
|