Chain-Type Quantity Index for Real GDP: Professional, Scientific, and Technical Services (NAICS 54) in California was 160.54700 Index 2009=100 in July of 2025, according to the United States Federal Reserve. Historically, Chain-Type Quantity Index for Real GDP: Professional, Scientific, and Technical Services (NAICS 54) in California reached a record high of 160.54700 in July of 2025 and a record low of 61.53600 in January of 2005. Trading Economics provides the current actual value, an historical data chart and related indicators for Chain-Type Quantity Index for Real GDP: Professional, Scientific, and Technical Services (NAICS 54) in California - last updated from the United States Federal Reserve on April of 2026.