Year Index 1992 31.991 1993 37.682 1994 41.485 1995 46.531 1996 51.786 1997 56.151 1998 60.303 1999 64.277 2000 67.778 2001 73.655 2002 79.238 2003 83.718 2004 86.494 2005 87.835 2006 89.757 2007 93.499 2008 97.718 2009 100.997 2010 100 2011 101.12 2012 101.583 2013 103.211 2014 104.027 2015 105.09 2016 105.881 2017 107.565 2018 109.912 2019 111.548 2020 113.405 2021 115.472 2022 117.653 2023 119.95 2024 122.209