| Year | Value | | 2024 | 100.23311176541 | | 2023 | 99.930397674014 | | 2022 | 99.400232905638 | | 2021 | 99.881813098279 | | 2020 | 102.19961396534 | | 2019 | 101.4604746013 | | 2018 | 101.94567897259 | | 2017 | 102.23003296676 | | 2016 | 102.29347041001 | | 2015 | 102.50838758426 | | 2014 | 100.93358203456 | | 2013 | 101.57287505474 | | 2012 | 101.94570395768 | | 2011 | 101.20007012152 | | 2010 | 101.95582835048 | | 2009 | 101.4970082745 | | 2008 | 98.253270892676 | | 2007 | 97.88655350329 | | 2006 | 97.263683586645 | | 2005 | 96.013992950063 | | 2004 | 95.518684997799 | | 2003 | 96.038468466027 | | 2002 | 95.52964889456 | | 2001 | 94.274880191519 | | 2000 | 94.255480926493 | | 1999 | 96.252866059408 | | 1998 | 97.965209310831 | | 1997 | 97.947832990589 | | 1996 | 96.112505437096 | | 1995 | 96.86539902191 | | 1994 | 98.78076497654 | | 1993 | 100.01124442297 | | 1992 | 100.52447260438 | | 1991 | 100.63866805933 | | 1990 | 99.764054976197 | | 1989 | 99.836951423436 | | 1988 | 99.09585990614 | | 1987 | 98.678299810564 | | 1986 | 99.248238801436 | | 1985 | 97.708323750517 | | 1984 | 96.735615364968 | | 1983 | 97.10929563558 | | 1982 | 96.504465700279 | | 1981 | 99.434246032392 | | 1980 | 98.885431316492 | | 1979 | 100.30729970052 | | 1978 | 100.59750393587 | | 1977 | 101.4938255572 | | 1976 | 101.36575456032 |
|