| Year | Value | | 2022 | 204.48212061577 | | 2021 | 187.1174250583 | | 2020 | 172.77429125289 | | 2019 | 167.39786028006 | | 2018 | 161.37381418391 | | 2017 | 155.66878623002 | | 2016 | 150.48259420641 | | 2015 | 138.3886145601 | | 2014 | 126.92721286561 | | 2013 | 119.37210444145 | | 2012 | 112.39854926078 | | 2011 | 106.63644962213 | | 2010 | 100 | | 2009 | 95.202981748031 | | 2008 | 90.766293725192 | | 2007 | 85.889005874397 | | 2006 | 82.871430845734 | | 2005 | 79.543667330675 | | 2004 | 74.430627668128 | | 2003 | 69.824196200305 | | 2002 | 60.867580580643 | | 2001 | 56.124931603613 | | 2000 | 52.531582742571 | | 1999 | 49.074692199534 | | 1998 | 46.800895273592 | | 1997 | 45.351868475587 | | 1996 | 42.413974402025 | | 1995 | 36.640315941141 | | 1994 | 22.071544293434 | | 1993 | 1.0143693177485 | | 1992 | 0.050033487673934 | | 1991 | 0.0047562065122725 | | 1990 | 0.00089270375032944 | | 1989 | 2.9290748794953E-5 | | 1988 | 1.9135228855315E-6 | | 1987 | 2.6244476849579E-7 | | 1986 | 7.9931728030545E-8 | | 1985 | 3.2342321744633E-8 | | 1984 | 9.9212721126022E-9 | | 1983 | 3.3962800392251E-9 | | 1982 | 1.445055325821E-9 | | 1981 | 7.2057002117779E-10 | | 1980 | 3.5720399582063E-10 |
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