Year | Value | 2022 | 49.557821111691 | 2021 | 57.896154131033 | 2020 | 64.136974694937 | 2019 | 53.278028176618 | 2018 | 46.635021408099 | 2017 | 52.797143868616 | 2016 | 66.855911419793 | 2015 | 58.824309207106 | 2014 | 45.08572360035 | 2013 | 40.0696989979 | 2012 | 37.463551235505 | 2011 | 40.526376000362 | 2010 | 39.818400673496 | 2009 | 52.297430635557 | 2008 | 44.231237431043 | 2007 | 50.562147899302 | 2006 | 42.389047275442 | 2005 | 43.604726277419 | 2004 | 50.503961588892 | 2003 | 42.506372979624 | 2002 | 48.09092139294 | 2001 | 47.849647947078 | 2000 | 35.072583760087 | 1999 | 51.974083102187 | 1998 | 69.665766455091 | 1997 | 62.330114332079 | 1996 | 58.702669846888 | 1995 | 62.323241810263 | 1994 | 61.216070483326 | 1993 | 59.007334206025 | 1992 | 54.156821161772 | 1991 | 65.887201509041 | 1990 | 51.35912335958 | 1989 | 72.176310150953 | 1988 | 81.183611532625 | 1987 | 77.158217200398 | 1986 | 84.384205492554 | 1985 | 68.932837865678 | 1984 | 53.604590505999 | 1983 | 55.380380255255 | 1982 | 53.507042253521 | 1981 | 69.90954402806 | 1980 | 64.345172031077 | 1979 | 75.254942784314 | 1978 | 90.015326828038 | 1977 | 93.085221489362 | 1976 | 95.174699889074 | 1975 | 88.74695973236 | 1974 | 71.185222285309 | 1973 | 79.801309850993 | 1972 | 94.396140193237 | 1971 | 93.461101309661 | 1970 | 98.8157975 | 1969 | 98.113215305205 | 1968 | 97.266922990354 | 1967 | 93.835642951309 | 1966 | 90.95941900369 | 1965 | 94.650205216007 | 1964 | 97.985853212056 | 1963 | 98.633537657709 | 1962 | 96.163637723796 | 1961 | 99.548193098199 | 1960 | 111.96701459579 |
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