Year | Value | 2022 | 0.71646730234388 | 2021 | 0.89483290367052 | 2020 | 0.74045055374345 | 2019 | 0.7079477480969 | 2018 | 0.68778771041998 | 2017 | 0.88503952327773 | 2016 | 0.95365006013716 | 2015 | 0.83320623992699 | 2014 | 0.69534495279985 | 2013 | 0.78609291221017 | 2012 | 0.66202582835123 | 2011 | 0.56643719090624 | 2010 | 0.63521736660572 | 2009 | 0.70965864448114 | 2008 | 0.49337522649527 | 2007 | 0.56866858152833 | 2006 | 0.6212758738474 | 2005 | 0.60453800033357 | 2004 | 0.56332687432576 | 2003 | 0.29429411220689 | 2002 | 0.21307426594621 | 2001 | 0.15563479930989 | 1994 | 0.48921943231441 | 1993 | 0.49477359029848 | 1981 | 0.51344445796326 | 1980 | 0.59217164124254 | 1979 | 0.59140125658621 | 1978 | 0.51405913726958 | 1977 | 0.48952580713679 | 1976 | 0.50447418110172 | 1975 | 0.43819927925888 | 1974 | 0.42037350633243 | 1973 | 0.6834490289369 | 1972 | 0.84194090799904 | 1971 | 0.96132128740824 | 1970 | 0.75439557096794 | 1969 | 0.67537217659138 | 1968 | 0.67037817894321 |
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