Year | Value | 2022 | 27.128155370398 | 2021 | 27.136784524148 | 2020 | 25.781879317215 | 2019 | 26.466971530878 | 2018 | 26.579008418268 | 2017 | 26.397665717287 | 2016 | 25.749315158802 | 2015 | 26.222274891668 | 2014 | 26.554626021783 | 2013 | 26.255618352183 | 2012 | 26.609945712642 | 2011 | 26.563570139371 | 2010 | 26.264866997454 | 2009 | 24.9836301395 | 2008 | 27.150061766875 | 2007 | 27.963811942256 | 2006 | 27.983305058228 | 2005 | 26.864400011914 | 2004 | 26.366300026205 | 2003 | 25.142589627772 | 2002 | 24.737877352282 | 2001 | 24.93956435659 | 2000 | 25.457997502486 | 1999 | 24.957780509147 | 1998 | 25.390202945449 | 1997 | 25.60124293811 | 1996 | 25.114413402861 | 1995 | 24.385273452456 | 1994 | 24.368043434874 | 1993 | 23.620880055959 | 1992 | 23.428403006416 | 1991 | 22.925351082329 | 1990 | 23.775996717432 | 1989 | 24.652211056766 | 1988 | 25.035708317903 | 1987 | 24.075330785196 | 1986 | 23.206899748687 | 1985 | 23.845119705931 | 1984 | 24.059512371317 | 1983 | 22.836024576946 | 1982 | 23.36549851228 |
|