Year | Value | 2022 | 89.20733316711 | 2021 | 88.745754301408 | 2020 | 89.930824953235 | 2019 | 90.195251243766 | 2018 | 89.456282857464 | 2017 | 89.244675172662 | 2016 | 89.788335213324 | 2015 | 92.49878262281 | 2014 | 88.897939126809 | 2013 | 89.788375730359 | 2012 | 90.261667529397 | 2011 | 91.465636671438 | 2010 | 91.914729179411 | 2009 | 92.415522644124 | 2008 | 91.472625069917 | 2007 | 92.906956086374 | 2006 | 91.409914703035 | 2005 | 91.542487243208 | 2004 | 92.260139130829 | 2003 | 93.351728710439 | 2002 | 93.160552902699 | 2001 | 93.441949360942 | 2000 | 93.455411088766 | 1999 | 94.591843302921 | 1998 | 93.871339986558 | 1997 | 93.620849433404 | 1996 | 93.956039173014 | 1995 | 93.376665543913 | 1994 | 93.414566771733 | 1993 | 93.598712400181 | 1992 | 95.315198114742 | 1991 | 94.986137152121 | 1990 | 95.343616985904 | 1989 | 96.186099073308 | 1988 | 96.626595226075 | 1987 | 96.769074871014 | 1986 | 95.547567720751 | 1985 | 94.76959842849 | 1984 | 93.755032736749 | 1983 | 95.594455119015 | 1982 | 94.585759894446 | 1981 | 95.041650279274 | 1980 | 99.142234088313 | 1979 | 98.868657058449 | 1978 | 99.345563294847 | 1977 | 98.767957363592 | 1976 | 96.180663536428 | 1975 | 95.773527040879 | 1974 | 93.355042796912 | 1973 | 95.929260769385 | 1972 | 95.95934239042 | 1971 | 98.79366022622 | 1970 | 100.52350989374 | 1969 | 99.028162718413 |
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