Year	2000 = 100
1981	61.5977359
1982	67.35203446
1983	59.6975168
1984	60.17022608
1985	59.69837469
1986	49.1649195
1987	47.14614583
1988	26.1489365
1989	32.78669444
1990	47.43472588
1991	57.66245536
1992	64.40060455
1993	73.58364029
1994	81.78688056
1995	77.40588096
1996	85.70542418
1997	92.55285563
1998	103.6908297
1999	109.5344986
2000	100
2001	85.29237512
2002	86.66861822
2003	91.93540487
2004	112.4266321
2005	315.3027373
2006	371.5861963
2007	480.4749915
2008	626.8104886
2009	516.7987707
2010	654.4991024
2011	932.6836189
2012	986.056712
2013	1027.356734
2014	1022.886941
2015	915.8405451
2016	850.0298609
2017	918.6609079
2018	931.3023511