Year Index (Units) 1980 5.802 1981 6.435 1982 7.165 1983 8.198 1984 8.326 1985 8.900 1986 10.832 1987 11.821 1988 12.881 1989 14.199 1990 14.989 1991 17.257 1992 20.588 1993 21.795 1994 23.774 1995 25.842 1996 27.390 1997 28.944 1998 32.421 1999 35.344 2000 35.555 2001 36.766 2002 38.057 2003 40.375 2004 41.191 2005 43.930 2006 47.564 2007 49.815 2008 55.143 2009 61.257 2010 66.786 2011 73.185 2012 81.583 2013 87.905 2014 95.011 2015 102.210 2016 112.880 2017 115.940 2018 121.250 2019 128.550 2020 134.690 2021 140.330 2022 151.670 2023 162.950 2024 172.282 2025 181.758 2026 191.572 2027 201.917 2028 212.821 2029 224.313