Year 2015 = 100 1980 21.7037959381 1981 22.658371589 1982 20.6971429599 1983 25.2236621496 1984 20.7816590284 1985 21.9180669593 1986 27.1394765459 1987 31.4126228787 1988 38.7511423914 1989 48.1678453368 1990 47.5637834116 1991 51.7850277597 1992 53.7138176538 1993 52.6357994472 1994 53.0645168383 1995 53.839718982 1996 54.8919610437 1997 58.224060918 1998 57.5225662102 1999 62.2576555 2000 62.2576555 2001 62.2576555 2002 54.1904663359 2003 70.6755920429 2004 73.9343857193 2005 85.1921481898 2006 103.8857546023 2007 107.6633035938 2008 114.9990091476 2009 91.2662154912 2010 116.1834829582 2011 122.2105501501 2012 112.8701480892 2013 108.805512363 2014 110.0158385406 2015 100 2016 114.8262660683 2017 114.8709863648 2018 115.5323204894 2019 104.9332615708 2020 88.4753187889 2021 105.4735878561