Year	2015 = 100
1980	0.210674919
1981	0.1736936992
1982	0.1778179418
1983	0.2049086742
1984	0.2298357183
1985	0.2558923124
1986	0.3753183684
1987	0.6463364936
1988	0.7604887518
1989	0.6235023487
1990	0.9606483915
1991	0.5747393381
1992	0.7736001492
1993	0.8728081843
1994	0.9540419092
1995	1.9612307698
1996	3.5653846152
1997	7.622969231
1998	6.7538461534
1999	10.9076923065
2000	16.876923076
2001	26.6923076904
2002	32.5692307705
2003	43.0923076874
2004	70.7514307592
2005	108.6769230775
2006	126.2615384561
2007	157.0769230766
2008	234.1197692692
2009	139.9999999899
2010	153.8461538449
2011	207.692307656
2012	238.4615384823
2013	226.1538462193
2014	196.9230768836
2015	100
2016	75.3846153727
2017	79.9999999966
2018	100
2019	83.0769230793
2020	49.2307692209
2021	87.6923076863