From the dataset abstract
This dataset provides statistics on the population of the Helsinki region by native language and age 31.12.1999-.
Source: Helsingin seudun väestö äidinkielen ja iän mukaan 31.12.1999-
| Field | Value |
|---|---|
| Format | PXWEB |
| Time series starts | 1999-12-31 |
| Time series accuracy | year |