How many times a year does Vale pay a dividend?

Excuse me, I was wondering if you could clarify something for me. In the paragraph it mentions Vale paying dividends, but it doesn't specifically state how often they do so. I'm trying to understand their dividend policy better. So, how many times a year does Vale typically pay a dividend to its shareholders? Is it a quarterly dividend, an annual dividend, or something else entirely? I'd appreciate any insight you can provide on this matter.