Year | Value | 2021 | 134.10213698474 | 2020 | 140.26803625312 | 2019 | 112.05063427755 | 2018 | 107.97450726489 | 2017 | 107.2863711468 | 2016 | 106.78085544137 | 2015 | 105.39547668557 | 2014 | 105.57296171416 | 2013 | 92.312294431868 | 2012 | 77.805067175263 | 2011 | 58.057649948503 | 2010 | 50.16780070723 | 2009 | 48.364699296773 | 2008 | 35.797749400879 | 2007 | 31.792195137488 | 2006 | 35.789057626323 | 2005 | 40.267510268662 | 2004 | 43.469121299952 | 2003 | 45.499138481967 | 2002 | 50.165369852649 | 2001 | 51.995167014797 | 2000 | 56.41656755974 | 1999 | 59.157380528678 | 1998 | 64.257825472763 | 1997 | 64.009720941351 | 1996 | 64.215512104392 | 1995 | 57.883571490065 | 1994 | 48.104636823116 | 1993 | 46.698822318305 | 1992 | 36.984133530262 | 1991 | 35.165117266143 | 1990 | 35.132322407394 | 1971 | 1,767.3855741443 | 1970 | 2,002.5104151729 |
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