Year	2015 = 100
1980	0.745366101
1981	0.7722276755
1982	0.8666066411
1983	0.5402299921
1984	0.4975127059
1985	0.559530005
1986	1.4676869021
1987	1.6345154529
1988	1.7379296745
1989	1.5552709686
1990	1.7297774988
1991	1.9093865943
1992	1.5902506448
1993	1.70472184
1994	1.0491489288
1995	3.4325603142
1996	8.2841297163
1997	9.3707194487
1998	8.992740659
1999	12.0565135014
2000	12.794088445
2001	23.0634011229
2002	14.3827113952
2003	25.7583864872
2004	30.9781476312
2005	37.1624298475
2006	57.3038994595
2007	78.5049522169
2008	107.4282444247
2009	158.7771907903
2010	155.5999448643
2011	197.7835579007
2012	212.9038443495
2013	173.1485548014
2014	168.6635318265
2015	100
2016	65.8919270038
2017	80.6213211825
2018	87.5747190278
2019	64.7679084279
2020	45.3331593131
2021	53.8997074124