Year Index 1992 0.052 1993 0.441 1994 12.379 1995 42.846 1996 53.512 1997 56.804 1998 56.188 1999 57.498 2000 67.649 2001 71.574 2002 74.591 2003 79.783 2004 87.165 2005 99.998 2006 111.327 2007 134.241 2008 171.79 2009 139.323 2010 158.588 2011 197.612 2012 203.234 2013 204.074 2014 201.359 2015 183.62 2016 210.481 2017 244.043 2018 265.078 2019 255.453 2020 259.778 2021 263.563 2022 268.281 2023 274.79 2024 282.041