Year	2000 = 100
1980	131.0992372
1981	145.0923452
1982	95.7899356
1983	59.18999497
1984	48.45704108
1985	35.46159704
1986	26.04896684
1987	29.94024341
1988	31.46061615
1989	36.61413766
1990	57.32502162
1991	61.55960816
1992	64.90236316
1993	54.71664021
1994	54.99929015
1995	64.49866594
1996	78.27616875
1997	78.28003557
1998	50.03931274
1999	65.42799325
2000	100
2001	87.73055953
2002	93.38811338
2003	120.1877989
2004	162.402846
2005	232.9260276
2006	272.3599242
2007	300.7475865
2008	404.034389
2009	247.8816236
2010	323.7088022
2011	470.0759187
2012	500.6264259
2013	484.4772695
2014	441.3757309
2015	262.3643496
2016	236.6233152
2017	285.9323993
2018	385.5226016