Dataset properties:

• Measurements: Chained volume index relative to 2010 (Ch. Vol. Index 2010=100)
• Adjustment: Not seasonally adjusted (NSA) or calendar day adjusted and seasonally adjusted (CDASA)
• Native frequency: Quarterly
• Start date: As early as 1995Q1

The series reside in the historical catalog (Spain » National Accounts » by Expenditure » Quarterly » Volume Indexes) and are:

• NAJECINVUQ.IESP = By expenditure: Changes in inventories and acquisitions less disposals of valuables, (Ch. Vol. Index 2010=100, NSA)
• NAJECINVCQ.IESP = (Ch. Vol. Index 2010=100, CDASA)

Because catalog locations are subject to change, the upper-right search box on DataBuffet.com provides a "find in catalog" mode that accepts a mnemonic.