Year Index 1989 0.872 1990 1 1991 1.4 1992 1.6 1993 2.1 1994 3 1995 4.1 1996 4.8 1997 5.7 1998 6.8 1999 8.1 2000 9 2001 10 2002 11.8 2003 13.4 2004 15.5 2005 16.7 2006 19.4 2007 23.7 2008 27.9 2009 30.8 2010 36.9 2011 44.5 2012 62.9 2013 75.2 2014 87.4 2015 94.7 2016 105.9 2017 114.7 2018 173.29 2019 227.296 2020 295.485 2021 378.22 2022 476.557 2023 595.697 2024 744.621