Qantas Bonus Status Credits promos - how often were these offered in the past?

Hi Guys,
Qantas had in Feb a bonus where if you booked & paid for flights you received double status credits. I managed to book a few flights so it gave me double credits which is great.
Does anybody know how often in the past Qantas has done this as I need to book asia & LA & would be a great way to retain my platinum status.
Are they likely to do this again this year or do they usually only do it once a year?
Thanks in advance

From my recollection they do it around every 6 months or so. Possibly fewer and further between

It happens usually once a calendar year. Occasionally they offer double status credits on specific flights like to USA or London.