Year	2000 = 100
1980	82.2776608
1981	91.76443508
1982	69.09900119
1983	67.72412841
1984	78.81526515
1985	67.94086987
1986	65.1536983
1987	70.78551268
1988	74.26383067
1989	74.16875178
1990	78.37889892
1991	70.97759147
1992	66.90853197
1993	57.49399792
1994	66.65942141
1995	85.15123731
1996	93.20153875
1997	99.341971
1998	91.10179579
1999	84.18397085
2000	100
2001	86.0695478
2002	78.93156383
2003	54.53421199
2004	42.57812502
2005	50.39430623
2006	44.68559174
2007	42.32477966
2008	36.51214133
2009	30.41153157
2010	35.09176627
2011	38.06127521
2012	38.87864762
2013	40.54585648
2014	40.31651992
2015	38.03466742
2016	38.59440078
2017	38.42150701
2018	40.34949553