Real Gross Domestic Product: Pipeline Transportation (NAICS 486) in Maryland was 27.80000 Mil. of Chn. 2009 $ in January of 2022, according to the United States Federal Reserve. Historically, Real Gross Domestic Product: Pipeline Transportation (NAICS 486) in Maryland reached a record high of 96.70000 in January of 1999 and a record low of 13.40000 in January of 2001. Trading Economics provides the current actual value, an historical data chart and related indicators for Real Gross Domestic Product: Pipeline Transportation (NAICS 486) in Maryland - last updated from the United States Federal Reserve on April of 2024.