Year 2015 = 100 1980 26.4171745826 1981 23.5259697447 1982 19.9566828156 1983 20.1800723671 1984 18.3324511818 1985 18.9813524917 1986 28.0880624805 1987 28.8968810448 1988 20.9953205827 1989 20.7877578919 1990 23.079520369 1991 19.3412487228 1992 19.1709451012 1993 18.1626421513 1994 17.8609426092 1995 19.8355074633 1996 20.2987219844 1997 22.4824475753 1998 24.7323466601 1999 21.804169172 2000 24.5442415077 2001 30.6383317961 2002 30.8699390641 2003 35.7899389926 2004 39.8083745652 2005 45.2461325439 2006 52.1194088394 2007 77.0342951225 2008 94.0681653597 2009 73.4809103633 2010 84.9218292354 2011 112.5015555619 2012 107.7812176382 2013 110.0039359514 2014 124.9592936884 2015 100 2016 86.1291478104 2017 79.3469902934 2018 93.5691790154 2019 103.6235664652 2020 88.4959908423 2021 100.9145917768