Year Index (Units) 1990 39.107 1991 41.675 1992 43.658 1993 45.729 1994 48.286 1995 51.013 1996 52.640 1997 54.616 1998 56.121 1999 57.709 2000 58.684 2001 60.374 2002 61.340 2003 64.077 2004 64.882 2005 67.136 2006 69.390 2007 72.932 2008 75.911 2009 79.050 2010 81.801 2011 84.621 2012 89.168 2013 93.828 2014 97.997 2015 101.740 2016 106.030 2017 112.554 2018 120.988 2019 128.342 2020 134.607 2021 143.499 2022 157.976 2023 170.795 2024 183.162 2025 195.403 2026 209.631 2027 225.926 2028 245.337 2029 267.401