Year	2015 = 100
1980	5.6793889091
1981	4.581569435
1982	11.5070194517
1983	10.3771664378
1984	10.4128753847
1985	8.4497911223
1986	7.9621314643
1987	11.202517715
1988	12.7274746564
1989	12.3656698024
1990	5.0975482683
1991	4.9656137128
1992	3.675069145
1993	7.2609528969
1994	5.4136829202
1995	8.040735971
1996	19.0903871624
1997	12.4394185615
1998	8.0385107661
1999	12.0045174083
2000	6.8690826794
2001	10.1983539051
2002	10.1286969487
2003	11.721290773
2004	12.7316903773
2005	16.4261229588
2006	24.2591524801
2007	42.9070984346
2008	33.6557650931
2009	40.4832425424
2010	36.798420364
2011	55.044369452
2012	56.5796292138
2013	75.3064478097
2014	91.3315158455
2015	100
2016	113.4955860394
2017	44.9562144063
2018	33.4952560556
2019	22.0161155178
2020	18.5730183303
2021	19.9934722626