Global silicon revenues remain stable in 2020 According to a new report from the SEMI Silicon Manufacturers Group (SMG), worldwide silicon wafer area shipments increased last year while revenue remained unchanged from 2019 at $11bn. SMG's year-end analysis of the silicon wafer industry reported that silicon shipments totaled 12,407 million square inches (MSI), compared to the11,810 MSI shipped in 2019, a rebound in volume of 5% year over year, recovering close to the historic high set in 2018. â2020 silicon wafer shipment growth was driven by healthy 300mm demand and a strong second half of 2020 despite disruptions to the semiconductor industry caused by COVID-19,â said Neil Weaver, chairman SEMI SMG and vice president, Product Development and Applications Engineering at Shin Etsu Handotai America.