Year Index 1992 0.764 1993 6.345 1994 17.822 1995 25.313 1996 34.26 1997 40.875 1998 44.586 1999 61.338 2000 77.999 2001 83.718 2002 85.414 2003 88.809 2004 93.346 2005 100 2006 109.392 2007 125.665 2008 154.776 2009 161.022 2010 177.178 2011 217.011 2012 235.796 2013 243.283 2014 263.756 2015 272.796 2016 289.302 2017 307.606 2018 312.251 2019 319.147 2020 334.706 2021 351.337 2022 368.735 2023 386.993 2024 406.156