Year 2015 = 100 1980 6.5393879373 1981 4.736385572 1982 5.0093311907 1983 5.492972489 1984 3.6982412039 1985 10.0247959925 1986 7.4489278641 1987 12.1191138249 1988 5.0936528311 1989 10.6120890921 1990 8.7274136923 1991 6.4160807028 1992 6.8589087155 1993 6.0144067315 1994 6.7220641722 1995 13.383395187 1996 18.9566622767 1997 20.8048006656 1998 15.6099526576 1999 17.1317011236 2000 16.4611516818 2001 14.9646833472 2002 15.7727762481 2003 19.0679995149 2004 22.5876930411 2005 26.3602897099 2006 30.9035675741 2007 28.7606249218 2008 47.8600502731 2009 52.5559679194 2010 66.5883514865 2011 102.5784149467 2012 84.3379624 2013 103.1261223527 2014 120.2474230737 2015 100 2016 89.5216483989 2017 74.8487095344 2018 113.0998999998 2019 92.3090760042 2020 78.8617841557 2021 80.8655898946