Year Index 1995 20.965 1996 23.966 1997 26.414 1998 29.561 1999 29.627 2000 33.931 2001 39.528 2002 44.338 2003 54.895 2004 60.389 2005 67.373 2006 73.1 2007 77.93 2008 89.66 2009 102.15 2010 114.22 2011 125.97 2012 141.06 2013 152.29 2014 164.44 2015 180.15 2016 213.56 2017 246.38 2018 274.57 2019 307.678 2020 343.622 2021 383.139 2022 426.433 2023 473.341 2024 525.409