How often does NEM pay dividends?

Excuse me, could you clarify for me the dividend policy of NEM? Specifically, I'm wondering how frequently they distribute dividends to their shareholders or token holders, if at all? Is there a regular schedule for these payments, or are they made on an ad-hoc basis? Additionally, are there any prerequisites or conditions that need to be met in order for a dividend to be paid out? Understanding the dividend policy is crucial for investors and token holders alike, so I'd appreciate any insight you can provide.