| Year | Value | | 2022 | 332.77867652723 | | 2021 | 299.81896618134 | | 2020 | 245.71142438949 | | 2019 | 212.3087589554 | | 2018 | 194.51043833295 | | 2017 | 180.94907942377 | | 2016 | 169.78198906094 | | 2015 | 144.04206147446 | | 2014 | 130.81580771897 | | 2013 | 121.34273168477 | | 2012 | 113.42808720438 | | 2011 | 106.42939681072 | | 2010 | 100 | | 2009 | 92.164402467616 | | 2008 | 81.277124661201 | | 2007 | 72.281298325546 | | 2006 | 65.319925505911 | | 2005 | 59.915778446599 | | 2004 | 50.636857945759 | | 2003 | 42.92430868488 | | 2002 | 35.357290452119 | | 2001 | 28.926059869635 | | 2000 | 23.828287866443 | | 1999 | 18.9067761727 | | 1998 | 14.912153677314 | | 1997 | 11.981631553567 | | 1996 | 9.6300873393305 | | 1995 | 6.7308861512496 | | 1994 | 4.9884434393654 | | 1993 | 3.2266499276676 | | 1992 | 1.1389032075691 | | 1991 | 0.42863200252748 | | 1990 | 0.21687257852641 | | 1989 | 0.10475731222668 | | 1988 | 0.046891368330035 | | 1987 | 0.03105306041005 | | 1986 | 0.021117743893314 | | 1985 | 0.013551938010276 |
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