Year	2015 = 100
1980	54.3160947683
1981	59.2868044516
1982	46.8812243025
1983	39.3841846327
1984	45.2054819269
1985	40.7999467426
1986	24.4720556005
1987	29.8892531262
1988	28.9482375984
1989	37.5445416508
1990	49.4442906292
1991	42.826097301
1992	40.0850010072
1993	41.500763117
1994	45.4654621927
1995	49.4706370953
1996	61.8081427879
1997	63.9818810233
1998	47.4603982757
1999	56.1875150533
2000	89.868396334
2001	71.4760513301
2002	71.7816076341
2003	72.9850706028
2004	106.3228711203
2005	149.3366211099
2006	175.7699214013
2007	187.5686831239
2008	254.6865367105
2009	154.3943820131
2010	176.2175345846
2011	248.7630329249
2012	260.9021951036
2013	237.8863008182
2014	200.2573104734
2015	100
2016	71.5537805641
2017	85.6629767335
2018	92.3101664054
2019	46.1282800254
2020	13.4283952842
2021	9.5821383514