Year 2010 = 100 1977 49.3979184996874 1980 58.3883396666305 1981 63.7233148645967 1982 67.7739441815711 1983 68.5643108775661 1984 70.6719554002196 1985 72.3350186563754 1986 73.6234810305759 1987 74.5414590160282 1988 75.4306215490226 1989 76.4144634258082 1990 78.048711229506 1991 79.2974906091781 1992 80.3121238551617 1993 83.7267549714526 1994 85.7885417597654 1995 90.9072364045671 1996 92.7218689406532 1997 94.3088594023198 1998 93.8925996090957 1999 93.5023560529482 2000 94.9592653292323 2001 95.5251184856463 2002 93.3137383341436 2003 93.593679549146 2004 94.3557417455415 2005 95.5299396195795 2006 95.6826806042815 2007 96.6086728240376 2008 98.6229445597957 2009 99.6443998949906 2010 100 2011 100.137911563169 2012 100.249831963168 2013 100.640009374917 2014 100.431575127898 2015 99.9411201211483 2016 99.6625909496525 2017 98.4063383634936 2018 99.4150542992179 2019 99.0268165721066 2020 100.948253665821 2021 102.69810471103 2022 106.479705986051 2023 106.859907015157