Year | Value | 2021 | 42.587264666832 | 2020 | 38.976122689704 | 2019 | 27.990361189685 | 2018 | 20.22645890702 | 2017 | 18.012221682492 | 2016 | 16.203712916571 | 2015 | 14.198749501993 | 2014 | 12.830550709465 | 2013 | 11.303045822303 | 2012 | 10.098044499394 | 2011 | 9.2207393735943 | 2010 | 7.1692075913464 | 2009 | 5.1424731412065 | 2008 | 4.4322633191367 | 2007 | 4.007624014494 | 2006 | 3.0206364971999 | 2005 | 2.5869167711527 | 2004 | 2.2243075983752 | 2003 | 1.8742511730768 | 2002 | 1.4769018146689 | 2001 | 0.67068291101365 | 2000 | 0.47542066184492 | 1999 | 0.22607284029498 | 1998 | 0.11699040152353 | 1997 | 0.060038243670659 | 1996 | 0.040563748180544 | 1995 | 0.019977266630114 | 1994 | 0.00085127828087344 | 1993 | 0.00016577339439693 | 1992 | 8.4720783868761E-5 |
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