Year | Value | 2021 | 2,126.7178735257 | 2020 | 2,080.1074048304 | 2019 | 2,173.4105877637 | 2018 | 2,210.4106087571 | 2017 | 2,041.0710294037 | 2016 | 1,952.3486801653 | 2015 | 1,922.8321701771 | 2014 | 2,014.397861658 | 2013 | 2,007.6333892296 | 2012 | 1,751.2282310737 | 2011 | 1,571.82955044 | 2010 | 1,434.3982682935 | 2009 | 1,291.6762067653 | 2008 | 1,275.5857402121 | 2007 | 1,202.2673580406 | 2006 | 1,125.9253762741 | 2005 | 1,043.318193983 | 2004 | 917.45113237811 | 2003 | 828.63055680848 | 2002 | 690.50926454624 | 2001 | 851.20931162687 | 2000 | 887.67288993883 | 1999 | 1,017.4376442665 | 1998 | 1,004.5482944893 | 1997 | 1,199.3053240522 | 1996 | 1,198.2188200221 | 1995 | 1,134.8098197053 | 1994 | 1,021.3321036965 | 1993 | 784.5486973838 | 1992 | 704.12699155648 | 1991 | 612.16349409825 | 1990 | 607.64230218272 | 1989 | 489.76478103599 | 1988 | 513.97753815751 | 1987 | 465.7754395315 | 1986 | 460.45996609724 | 1985 | 537.33868233507 | 1984 | 604.84309057749 | 1983 | 632.5671953882 | 1982 | 697.84800001968 | 1981 | 745.58942728883 | 1980 | 679.67141364415 |
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