Year 2015 = 100 1980 40.6940239757 1981 42.3267376221 1982 42.1317984788 1983 29.5686728319 1984 49.2784248241 1985 28.2403339081 1986 32.5890498314 1987 34.4934423556 1988 42.2718513018 1989 51.6307279491 1990 63.1585975244 1991 75.2599926742 1992 68.5376820052 1993 88.8338244292 1994 77.3172467193 1995 79.5022880408 1996 64.3121857847 1997 56.3402067923 1998 40.9365007723 1999 69.0175696357 2000 49.5539800124 2001 37.9639568472 2002 82.1704988538 2003 99.1243432644 2004 84.5093497828 2005 56.3583978601 2006 53.8952601479 2007 47.9125473234 2008 52.4942093709 2009 44.3138805804 2010 46.6357832999 2011 81.3061409211 2012 88.0345743312 2013 96.9210779216 2014 107.0843455553 2015 100 2016 121.2304390105 2017 106.4459635337 2018 73.204903692 2019 114.1856392656 2020 86.978136847 2021 92.0851929705