Year Index 1992 20.419 1993 27.515 1994 34.768 1995 42.814 1996 48.43 1997 51.53 1998 52.92 1999 54.51 2000 55.46 2001 57.22 2002 58.05 2003 60.13 2004 64.54 2005 69.14 2006 73.8 2007 84.15 2008 92.9 2009 91.63 2010 93.83 2011 97.47 2012 99.02 2013 98.62 2014 98.89 2015 99.29 2016 101.38 2017 103.57 2018 106.21 2019 108.784 2020 111.421 2021 113.756 2022 116.15 2023 118.583 2024 121.031