Year 2000 = 100 1980 54.41898263 1981 47.17332506 1982 41.22990074 1983 43.82382134 1984 34.55260546 1985 37.15483871 1986 55.06898263 1987 46.41823821 1988 62.57866005 1989 42.18647643 1990 74.74292804 1991 57.12952854 1992 75.37679901 1993 78.61836228 1994 73.12258065 1995 95.79590571 1996 95.8426799 1997 91.65930521 1998 94.38461538 1999 102.2259305 2000 100 2001 122.8287841 2002 115.1364764 2003 157.6923077 2004 169.2307692 2005 191.5135236 2006 225.7770471 2007 271.0728288 2008 414.2586849 2009 308.4715881 2010 425.2493797 2011 415.8236973 2012 437.1972705 2013 472.3500151 2014 484.9754342 2015 471.5038764 2016 502.6106042 2017 531.6856431 2018 610.3884806