set peak & trough

BE       AD      set        intraday    
2518  1975  100.00        -             Sunday, April 30, 1975              base day of set
2519  1976  76.44                        Wednesday, March 17, 1976     all-time low
2537  1994  1,789.16                   Wednesday, January 5, 1994    1st peak
2541  1998  207.31     204?         Friday, September 4, 1998        tomyam low
2551  2008  387.43                      Monday, October 27, 2008        hamburgher low
2561  2018  1838.96  1,852.51    Wednesday, January 24, 2018  2nd peak and ath
2563  2020  969.08                      Friday, March 13, 2020              covid19-low