Year	2015 = 100
1980	6.8578856214
1981	6.2121900701
1982	5.940503186
1983	3.5187918291
1984	2.9080042954
1985	2.3120004766
1986	2.1021637589
1987	2.3421832506
1988	2.5304395283
1989	2.6568070405
1990	3.169191254
1991	3.8457601741
1992	4.1954055652
1993	4.2578447387
1994	4.9879416649
1995	4.9992876132
1996	8.0434444708
1997	8.0177830034
1998	8.6775474834
1999	9.8347764003
2000	15.3811415562
2001	31.685621761
2002	38.6299303131
2003	45.9968504338
2004	56.3708468837
2005	59.1083690147
2006	63.8244510268
2007	61.928675695
2008	60.1357487504
2009	63.1581757665
2010	72.6873314235
2011	76.6009638533
2012	89.0370416132
2013	97.8778055896
2014	108.788736619
2015	100
2016	101.5635707755
2017	117.2710809598
2018	112.0982639166
2019	115.8856749458
2020	97.6464977535
2021	91.4602250299