Base period

Period of time used as the base of an index number, or to which a constant series refers.

The base period refers to the period when the published index is 100, or to which weights or base data refer to. It can be one single year (e.g. 1995=100) but it may be as short as one day or as long as a specified number of years. Base period may include an indication of the value of the series in the base period (usually 1 or 100).

http://purl.org/linked-data/sdmx/2009/concept#basePer

urn:sdmx:org.sdmx.infomodel.conceptscheme.Concept=SDMX:CROSS_DOMAIN_CONCEPTS(2.0).BASE_PER

Recommended representation: Code list; DateTime; String
Codelist ID: CL_BASE_PER