Year | Value | 2021 | 1,916.1257470572 | 2020 | 1,645.1303520288 | 2019 | 1,792.5864423352 | 2018 | 1,726.2843161207 | 2017 | 1,717.7935178461 | 2016 | 1,487.7660406117 | 2015 | 1,390.3125420467 | 2014 | 1,351.7736812619 | 2013 | 1,241.3092147731 | 2012 | 1,236.6491506983 | 2011 | 1,247.9996995984 | 2010 | 1,168.2930596531 | 2009 | 957.65867722986 | 2008 | 851.41788889659 | 2007 | 890.99491455511 | 2006 | 698.51477160916 | 2005 | 619.81631609289 | 2004 | 546.49665668472 | 2003 | 479.16883183125 | 2002 | 412.37122553048 | 2001 | 395.20935058405 | 2000 | 387.07490737867 | 1999 | 390.30166240739 | 1998 | 365.995217796 | 1997 | 366.17056844467 | 1996 | 352.90174353571 | 1995 | 328.52595572788 | 1994 | 304.45452584909 | 1993 | 263.59620992989 | 1992 | 275.7979247458 | 1991 | 263.21063455991 | 1990 | 321.39899973372 | 1989 | 304.2726317996 | 1988 | 314.04463716098 | 1987 | 302.16367893573 | 1986 | 276.99118507613 | 1985 | 262.90751908023 | 1984 | 247.07195423321 | 1983 | 261.27539336178 | 1982 | 244.59288581131 | 1981 | 243.6607418315 | 1980 | 242.81527512426 | 1979 | 202.18786725283 | 1978 | 185.7985760418 | 1977 | 167.72598841809 | 1976 | 146.08638576199 | 1975 | 142.71091622543 | 1974 | 149.77180688156 | 1973 | 132.60550111271 | 1972 | 113.33791782202 | 1971 | 109.25765907811 | 1970 | 103.64435415989 |
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