Year 2010 = 100 1981 28.9890925810347 1982 32.1693305857052 1983 35.3495685903757 1984 38.4074897487127 1985 39.752975058381 1986 41.0984603680492 1987 43.4224804483854 1988 46.8473521457227 1989 51.6177091527284 1990 56.9996503914016 1991 63.3601264007425 1992 69.4759687174165 1993 75.5918110340906 1994 82.1969207360984 1995 89.6582483624406 1996 95.2848232937807 1997 100.789081378787 1998 103.724685690791 1999 99.5659129154526 2000 95.8964075254482 2001 94.306288523113 2002 91.4930010574429 2003 89.0466641307732 2004 88.8020304381063 2005 89.5359315161073 2006 91.3268754223924 2007 93.1854021175941 2008 97.1953142599685 2009 97.7585041676054 2010 100 2011 105.305248929939 2012 109.574228429827 2013 114.327551250282 2014 119.384996620861 2015 122.955620635278 2016 125.917999549448 2017 127.799053840955 2018 130.874070736652 2019 134.647443117819 2020 134.985357062402 2021 137.102951115116 2022 139.682360892093 2023 142.610948411804