United States - Relative Importance Weights (Contribution to the Total Industrial Production Index): Energy Materials was 17.77% in March of 2024, according to the United States Federal Reserve. Historically, United States - Relative Importance Weights (Contribution to the Total Industrial Production Index): Energy Materials reached a record high of 24.25 in June of 2014 and a record low of 8.75 in May of 1999. Trading Economics provides the current actual value, an historical data chart and related indicators for United States - Relative Importance Weights (Contribution to the Total Industrial Production Index): Energy Materials - last updated from the United States Federal Reserve on April of 2024.