Year	2000 = 100
1980	24.00871826
1981	23.66532576
1982	20.56633812
1983	23.00677591
1984	25.66689097
1985	29.05042604
1986	16.99342609
1987	29.31555378
1988	31.46182602
1989	38.05214432
1990	49.03474562
1991	43.54786376
1992	48.38960144
1993	36.61919197
1994	38.08496966
1995	45.97904305
1996	64.32268653
1997	63.20868577
1998	44.72755965
1999	65.09948239
2000	100
2001	82.48958465
2002	105.1382401
2003	120.0353491
2004	170.1174094
2005	304.3681353
2006	402.2497159
2007	560.4873122
2008	806.8930691
2009	515.4387072
2010	638.7438455
2011	849.770231
2012	897.5293524
2013	861.589673
2014	747.0003787
2015	418.900773
2016	348.3007196
2017	436.9839667
2018	531.8020679