Year Index 1991 66.98 1992 69.19 1993 72.096 1994 73.899 1995 75.007 1996 76.1 1997 77.2 1998 77.3 1999 78.4 2000 80 2001 81.1 2002 81.9 2003 82.8 2004 84.6 2005 86.4 2006 87.6 2007 90.3 2008 91.2 2009 92 2010 93.7 2011 95.9 2012 97.9 2013 99.2 2014 99.4 2015 99.6 2016 101.3 2017 102.8 2018 104.6 2019 106.311 2020 108.23 2021 110.472 2022 112.919 2023 115.432 2024 118.003