Gross Domestic Product: Pipeline Transportation (NAICS 486) in Maryland was 37.20000 Mil. of $ in January of 2022, according to the United States Federal Reserve. Historically, Gross Domestic Product: Pipeline Transportation (NAICS 486) in Maryland reached a record high of 56.10000 in January of 1999 and a record low of 7.90000 in January of 2001. Trading Economics provides the current actual value, an historical data chart and related indicators for Gross Domestic Product: Pipeline Transportation (NAICS 486) in Maryland - last updated from the United States Federal Reserve on April of 2024.