Template:Certification Table Entry/Sales/DutchPeriod
This helper template calculates periods for Dutch certifications, as stated in NVPI#Certifications
It returns:
| Before 1984 | Before 1992 | Before 2000 | Before 2006 | Before 2008 | Before June 2009 | Before July 2014 | Before October 2015 | Before April 2016 | Before 2018 | Before 2024 | From 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
Returns 0 if the data provided is insufficient