| Year | Value | | 2022 | -396.07257493624 | | 2021 | -407.4788773153 | | 2020 | -421.5197601589 | | 2019 | -420.352957663 | | 2018 | -427.39610242531 | | 2017 | -420.5816596239 | | 2016 | -495.96525530642 | | 2015 | -479.50576095449 | | 2014 | -480.74539270073 | | 2013 | -467.43220577421 | | 2012 | -491.82559353198 | | 2011 | -668.98804493612 | | 2010 | -552.96498258637 | | 2009 | -484.92192158158 | | 2008 | -485.96177624577 | | 2007 | -398.62681570512 | | 2006 | -404.59305203053 | | 2005 | -433.20172146037 | | 2004 | -403.47844151379 | | 2002 | -370.53705102912 | | 2001 | -428.99090517088 | | 2000 | -461.04477285646 | | 1999 | -388.73334205164 | | 1998 | -342.02146698523 | | 1997 | -286.21957543462 | | 1996 | -261.17707467763 | | 1995 | -251.83264936686 | | 1994 | -261.51760941759 | | 1992 | -295.32695803367 | | 1991 | -281.04507790509 | | 1990 | -314.26748844827 |
|