| Year | Value | | 2022 | 133.94623440559 | | 2021 | 127.57420160521 | | 2020 | 120.30550550657 | | 2019 | 119.61869957599 | | 2018 | 119.85717385744 | | 2017 | 119.41838117957 | | 2016 | 119.19898484064 | | 2015 | 118.53928833701 | | 2014 | 116.91034114427 | | 2013 | 114.35342813272 | | 2012 | 112.24380799786 | | 2011 | 105.80145537085 | | 2010 | 100 | | 2009 | 97.202750517391 | | 2008 | 90.951120244213 | | 2007 | 80.728579085367 | | 2006 | 89.765738105762 | | 2005 | 58.58198395428 | | 2004 | 42.773222825238 | | 2003 | 33.689808145451 | | 2002 | 25.213862894599 | | 2001 | 21.131881819815 | | 2000 | 18.158580972759 | | 1999 | 17.297352349468 | | 1998 | 15.364803838727 | | 1997 | 13.387616999342 | | 1996 | 10.878651810026 | | 1995 | 12.968890068694 | | 1994 | 2.6613177457737 | | 1993 | 0.48519922438901 | | 1992 | 0.15768974792643 | | 1991 | 0.085880262716855 | | 1990 | 0.030567551136508 | | 1978 | 128.79237288072 | | 1977 | 123.11440677924 | | 1976 | 112.77542372839 | | 1975 | 99.957627117797 | | 1974 | 91.271186440254 | | 1973 | 84.745762711653 | | 1972 | 80.794134450105 | | 1971 | 76.810766202787 | | 1970 | 74.144607376055 | | 1969 | 71.049958737701 | | 1968 | 67.193550434203 | | 1967 | 65.749381070114 | | 1966 | 63.654541991843 | | 1965 | 62.416682536342 | | 1964 | 62.702342410811 | | 1963 | 62.758911109068 | | 1962 | 60.371253724722 | | 1961 | 59.600993040456 | | 1960 | 59.059850994684 |
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