The Silicone DMC Commodity Index was 91.24 on December 10, which was the same as yesterday, a 20.83% drop from the highest point of the cycle at 115.24 (2017-04-18), and a 29.60% increase from the low of 70.40 on July 27, 2016 . (Note: Period refers to 2011-09-01 to present)