Template:Certification Table Entry/Sales/AustrianPeriod
This helper template calculates periods for Austrian certifications, as stated in this source, which was sent by an authority in IFPI Austria.
It returns:
| Before 1988 | Before 2001 | Before April 2002 | Before 2007 | Before 2013 | From 2013 |
|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 |
Returns 0 if the data provided is insufficient