Year | Value | 2021 | 1,694.9866583194 | 2020 | 1,582.2517090324 | 2019 | 1,666.9767168287 | 2018 | 1,717.2959176544 | 2017 | 1,838.8852557296 | 2016 | 1,800.67080755 | 2015 | 1,774.078982209 | 2014 | 1,675.7319401389 | 2013 | 1,539.9986640867 | 2012 | 1,510.6828780947 | 2011 | 1,438.6531843554 | 2010 | 1,319.9604696953 | 2009 | 1,284.5240530363 | 2008 | 1,338.257766085 | 2007 | 1,183.4984175639 | 2006 | 1,087.1440066614 | 2005 | 1,041.2944351838 | 2004 | 951.46682343657 | 2003 | 881.3239819897 | 2002 | 874.12025548643 | 2001 | 896.4317931077 | 2000 | 880.56143108439 | 1999 | 843.82410194664 | 1998 | 821.18538814403 | 1997 | 771.80262064474 | 1996 | 757.63733320839 | 1995 | 727.6054350926 | 1994 | 669.96993121676 | 1993 | 262.8439421625 | 1992 | 261.80199289674 | 1991 | 240.93322955491 | 1990 | 215.01009733411 | 1989 | 174.71982741166 | 1988 | 509.93607763299 | 1987 | 894.17867625523 | 1986 | 661.73677054233 | 1985 | 598.72919595253 | 1984 | 717.16121376064 | 1983 | 646.58711479123 | 1982 | 595.2792397975 | 1981 | 601.11612084171 | 1980 | 561.97372328245 | 1979 | 394.60327707532 | 1978 | 570.19952069224 | 1977 | 631.64386374697 | 1976 | 527.60578663667 | 1975 | 469.48571187646 | 1974 | 459.05543316305 | 1973 | 338.27702888987 | 1972 | 285.69482816044 | 1971 | 278.87753623284 |
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