| Year | Value | | 2022 | 83.43716576 | | 2021 | 81.40843745 | | 2020 | 77.6695605 | | 2019 | 73.97670229 | | 2018 | 71.04276084 | | 2017 | 64.68461768 | | 2016 | 58.34773401 | | 2015 | 53.74497914 | | 2014 | 51.04 | | 2013 | 46.25 | | 2012 | 45.13 | | 2011 | 43.06571043 | | 2010 | 39.82 | | 2009 | 36.4 | | 2008 | 34.37 | | 2007 | 28.63 | | 2006 | 18.24 | | 2005 | 15.46 | | 2004 | 14.58 | | 2003 | 12.33 | | 2002 | 11.38 | | 2001 | 5.189481461 | | 2000 | 3.761685035 | | 1999 | 2.292117685 | | 1998 | 0.698805129 | | 1997 | 0.473695432 | | 1996 | 0.192724936 | | 1995 | 0.081691205 | | 1994 | 0.049869182 | | 1993 | 0.008457732 |
|