Year 2015 = 100 1980 4.7291771351 1981 5.2740706503 1982 5.9000479127 1983 5.3459911376 1984 6.4532971649 1985 6.973726424 1986 8.1283401874 1987 9.8444233444 1988 12.0957803589 1989 15.0619682532 1990 16.9444314126 1991 20.0461974926 1992 22.448992705 1993 25.3096794753 1994 29.828054571 1995 34.3558338934 1996 30.9805367704 1997 33.1902334495 1998 36.2897029656 1999 40.4790036605 2000 48.6955294747 2001 49.6198425962 2002 51.607217352 2003 57.5182528996 2004 64.8803041023 2005 69.7557077202 2006 77.4690152136 2007 86.9302501982 2008 90.9450272891 2009 77.7028787078 2010 90.3086116335 2011 98.4731212873 2012 100.7513712407 2013 100.9456740972 2014 101.7956578754 2015 100 2016 100.8579435008 2017 106.9657217457 2018 110.5529036357 2019 107.278039484 2020 101.6616447105 2021 117.075576216