Year | Value | 2021 | 567.50393513242 | 2020 | 561.34086326205 | 2019 | 516.70066770544 | 2018 | 469.85494320122 | 2017 | 425.20214373559 | 2016 | 253.87463127432 | 2015 | 298.1544206074 | 2014 | 283.60389333631 | 2013 | 265.91613264644 | 2012 | 293.89472367349 | 2011 | 423.83834012632 | 2010 | 373.0513485399 | 2009 | 339.6906207627 | 2008 | 313.10677026564 | 2007 | 269.44332693539 | 2006 | 250.03139763814 | 2005 | 237.27899246768 | 2004 | 233.49145962579 | 2003 | 213.9852918019 | 2002 | 248.472741719 | 2001 | 115.7158132444 | 2000 | 122.18470264006 | 1999 | 128.42327453244 | 1998 | 124.43203132991 | 1997 | 211.07821784496 | 1996 | 177.3215768294 | 1995 | 97.846269677249 | 1994 | 84.45490751015 | 1993 | 169.15262162997 | 1992 | 145.00923722594 | 1991 | 186.7819137769 | 1990 | 160.43951513749 | 1989 | 139.37193199976 | 1988 | 127.34652868734 | 1987 | 110.96994997233 | 1986 | 121.52164895546 | 1985 | 125.95821203543 | 1984 | 138.83760178572 | 1983 | 141.38155585895 | 1982 | 135.32426263621 | 1981 | 151.15741909018 | 1980 | 154.16399947316 |
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