Year | Value | 2022 | 89.975486361029 | 2021 | 89.956966110812 | 2020 | 89.938633574253 | 2019 | 90.187304054235 | 2018 | 90.147758324056 | 2017 | 90.160327677004 | 2016 | 90.210304194229 | 2015 | 90.288233776589 | 2014 | 90.427867492804 | 2013 | 90.618485059069 | 2012 | 90.843065611621 | 2011 | 91.04997807979 | 2010 | 91.164685160722 | 2009 | 91.229789318961 | 2008 | 91.310115387855 | 2007 | 91.335101679929 | 2006 | 91.334276891405 | 2005 | 91.359265734266 | 2004 | 91.370218090812 | 2003 | 91.392833936694 | 2002 | 91.42708144386 | 2001 | 91.452284014138 | 2000 | 91.471817990703 | 1999 | 91.471184477266 | 1998 | 91.490695207791 | 1997 | 91.502183619196 | 1996 | 91.514582767392 | 1995 | 91.533928191049 | 1994 | 91.55101211834 | 1993 | 91.569804572742 | 1992 | 91.592849823523 | 1991 | 91.613216940283 |
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