Year 2015 = 100 1980 65.7575147477 1981 45.415261984 1982 44.9421863384 1983 54.8767748974 1984 34.5345221337 1985 42.57680811 1986 52.5113966691 1987 59.6075313541 1988 64.8113634564 1989 61.0267582911 1990 72.3805737871 1991 64.8113634564 1992 67.6498173304 1993 56.7690774801 1994 42.57680811 1995 64.8113634564 1996 62.9190608737 1997 55.3498505431 1998 52.5113966691 1999 54.4036992517 2000 47.3075645667 2001 29.2905460195 2002 27.9340061471 2003 33.2977779345 2004 31.7083143101 2005 58.4 2006 50.3 2007 45.9 2008 49.2 2009 65.5 2010 71.2 2011 82.4 2012 84 2013 88.5 2014 96.9 2015 100 2016 94.7 2017 86.2 2018 74.7 2019 71.8 2020 71.4 2021 78.3 2022 85.5