Year Index (Units) 1980 0.183 1981 0.228 1982 0.270 1983 0.324 1984 0.365 1985 0.380 1986 0.471 1987 0.601 1988 0.775 1989 0.910 1990 0.992 1991 1.192 1992 1.483 1993 1.817 1994 2.450 1995 3.658 1996 4.533 1997 5.283 1998 6.258 1999 7.525 2000 8.450 2001 9.425 2002 10.917 2003 12.617 2004 14.550 2005 16.042 2006 17.967 2007 21.275 2008 26.658 2009 29.542 2010 33.175 2011 40.317 2012 52.642 2013 70.908 2014 81.942 2015 91.708 2016 100.008 2017 109.650 2018 142.793 2019 192.320 2020 262.382 2021 367.895 2022 536.217 2023 758.746 2024 1043.276 2025 1382.341 2026 1762.485 2027 2203.106 2028 2753.883 2029 3442.353