Year 2000 = 100 1980 48.17239403 1981 47.49587595 1982 52.44086963 1983 55.35317443 1984 57.97672418 1985 60.61648678 1986 64.62598348 1987 67.29436845 1988 62.79520226 1989 72.638124 1990 77.19399538 1991 74.99014251 1992 77.92532717 1993 77.20021318 1994 74.09669969 1995 78.22800756 1996 84.37659338 1997 90.26635874 1998 93.13457905 1999 91.80688442 2000 100 2001 88.46265629 2002 91.58944763 2003 92.12328383 2004 95.11188558 2005 104.306326 2006 102.2544104 2007 98.89923451 2008 97.13416457 2009 86.46071636 2010 83.99661473 2011 81.65690377 2012 77.90586938 2013 73.36941839 2014 72.64991323 2015 73.12794097 2016 80.68100815 2017 76.84020828 2018 69.20906306