Year | Value | 2021 | 14.468771606361 | 2020 | 14.468771606361 | 2019 | 14.468771606361 | 2018 | 14.468771606361 | 2017 | 14.468771606361 | 2016 | 14.468771606361 | 2015 | 14.468771606361 | 2014 | 14.476364753783 | 2013 | 14.483957901206 | 2012 | 14.491551048629 | 2011 | 14.499144196051 | 2010 | 14.506737343474 | 2009 | 14.531309825613 | 2008 | 14.555883075978 | 2007 | 14.580455558116 | 2006 | 14.605028040255 | 2005 | 14.629600522394 | 2004 | 14.654173004533 | 2003 | 14.678745486671 | 2002 | 14.70331796881 | 2001 | 14.727890450949 | 2000 | 14.752462933088 | 1999 | 14.75246446954 | 1998 | 14.752466005992 | 1997 | 14.752467542444 | 1996 | 14.752469078897 | 1995 | 14.752469847123 | 1994 | 14.752471383575 | 1993 | 14.752472920028 | 1992 | 14.75247445648 | 1991 | 14.752475992932 | 1990 | 14.752477529385 |
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