Year Index (Units) 1980 3.419 1981 3.837 1982 4.201 1983 4.696 1984 5.188 1985 5.432 1986 5.748 1987 6.280 1988 6.787 1989 7.222 1990 7.785 1991 8.520 1992 9.163 1993 10.048 1994 10.905 1995 11.932 1996 12.884 1997 13.688 1998 21.687 1999 26.127 2000 27.090 2001 30.197 2002 33.793 2003 36.088 2004 38.275 2005 42.280 2006 47.818 2007 50.840 2008 55.858 2009 58.542 2010 61.549 2011 64.839 2012 67.419 2013 71.741 2014 76.332 2015 81.187 2016 84.053 2017 87.253 2018 90.124 2019 92.668 2020 94.550 2021 96.026 2022 100.000 2023 103.713 2024 106.364 2025 109.116 2026 111.880 2027 114.696 2028 117.579 2029 120.532