United States - Relative Importance Weights (Contribution to the Total Industrial Production Index): Energy Materials: Primary Energy was 12.34% 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: Primary Energy reached a record high of 19.77 in June of 2014 and a record low of 4.53 in April of 1973. 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: Primary Energy - last updated from the United States Federal Reserve on April of 2024.