Year Index (Units) 1980 37.222 1981 47.172 1982 46.605 1983 48.847 1984 50.394 1985 50.858 1986 54.932 1987 64.648 1988 68.460 1989 73.841 1990 77.034 1991 81.368 1992 85.552 1993 87.046 1994 89.363 1995 90.857 1996 90.782 1997 95.415 1998 99.600 1999 99.600 2000 103.700 2001 106.100 2002 108.500 2003 111.700 2004 112.600 2005 114.700 2006 116.900 2007 121.700 2008 128.800 2009 131.926 2010 136.268 2011 137.900 2012 139.000 2013 141.100 2014 142.600 2015 144.700 2016 147.800 2017 152.700 2018 155.600 2019 161.000 2020 171.600 2021 172.800 2022 192.200 2023 213.934 2024 229.161 2025 240.366 2026 249.776 2027 259.555 2028 269.716 2029 280.275