Year Index 1991 64.817 1992 72.885 1993 87.611 1994 113.808 1995 99.436 1996 107.494 1997 121.215 1998 109.863 1999 113.516 2000 110.456 2001 118.836 2002 112.85 2003 111.21 2004 122.399 2005 126.008 2006 129.914 2007 141.457 2008 154.093 2009 162.462 2010 173.715 2011 202.645 2012 213.649 2013 220.196 2014 222.792 2015 225.366 2016 229.48 2017 234.606 2018 237.696 2019 242.728 2020 248.606 2021 254.879 2022 261.571 2023 266.842 2024 272.219