Year	2015 = 100
1980	4.3460078995
1981	5.5727116678
1982	4.7649780767
1983	3.391858717
1984	6.9114817354
1985	4.5805661867
1986	3.9641420916
1987	6.739041554
1988	6.3029859232
1989	5.6290817686
1990	7.6349376668
1991	8.1027064341
1992	2.3140877661
1993	11.2973689025
1994	34.1727679782
1995	9.5139410189
1996	11.170318148
1997	19.2206979071
1998	10.6167257056
1999	20.2811059158
2000	24.6653677856
2001	24.9740951667
2002	21.4063672889
2003	25.7669235796
2004	30.1274798875
2005	35.4727290801
2006	29.3346514746
2007	42.4305912869
2008	50.8127697338
2009	48.1889040928
2010	50.184453207
2011	95.9393740464
2012	51.9465143753
2013	60.5806671652
2014	65.8264948973
2015	100
2016	109.6307497483
2017	134.5001698298
2018	134.5283152343
2019	98.5775106251
2020	84.7807104795
2021	85.0689036212