Template:Certification Table Entry/Sales/NewZealandPeriod/doc

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This helper template calculates periods for New Zealand single certifications, as stated in the following sources:

  • According to Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). the levels changed in 1989
  • The 7 May 2007 chart and 4 June 2007 chart demonstrate a change near June 2007.
  • According to this and the very bottom of this, from 17 June 2016, the NZ singles have 15,000 for Gold and 30,000 for Platinum now.

It returns:

Before 1989 Before June 2007 Before June 2016 From June 2016
1 2 3 4

Returns 0 if the data provided is not sufficient.