Year Index 1982 0.001 1983 0.004 1984 0.082 1985 6.751 1986 11.115 1987 12.301 1988 14.946 1989 17.421 1990 20.559 1991 23.732 1992 26.215 1993 28.655 1994 31.098 1995 35.008 1996 37.791 1997 40.334 1998 42.107 1999 43.426 2000 44.908 2001 45.323 2002 46.432 2003 48.261 2004 50.491 2005 52.97 2006 54.553 2007 60.95 2008 68.171 2009 68.353 2010 73.261 2011 78.317 2012 81.877 2013 87.179 2014 91.711 2015 94.418 2016 98.196 2017 100.86 2018 102.78 2019 105.864 2020 110.099 2021 114.503 2022 119.656 2023 125.041 2024 130.668