Year | Value | 2021 | 37.688546557178 | 2020 | 37.717500948552 | 2019 | 37.732839370341 | 2018 | 37.751334468512 | 2017 | 37.766193293614 | 2016 | 37.810919554121 | 2015 | 37.815376193027 | 2014 | 37.844330166561 | 2013 | 37.873135105934 | 2012 | 37.90024037023 | 2011 | 37.928985676236 | 2010 | 37.958156264982 | 2009 | 38.000731769114 | 2008 | 38.0411460555 | 2007 | 38.083115931568 | 2006 | 38.125535735916 | 2005 | 38.175418080969 | 2004 | 38.21895580416 | 2003 | 38.262621864113 | 2002 | 38.306128670077 | 2001 | 38.347967328078 | 2000 | 38.390805557311 | 1999 | 38.520735970116 | 1998 | 38.614316673144 | 1997 | 38.684716315589 | 1996 | 38.773935710699 | 1995 | 38.862358491954 | 1994 | 38.948975127094 | 1993 | 39.034231676327 | 1992 | 39.120293412879 |
|