Lyn Alden · 169w United States' industrial production is one of the saddest macro charts out there. Whenever red and blue people yell at each other politically in the past couple decades of rising political polarizat... SMC @SMC 1677902395 So //In 1956, the index of industrial production expanded to include the output of electric and gas utilities along with the measures for manufacturing and mining. These three sectors continue to be the main components of the index today. 1