Not more than $500 and not lower than $50.
I doubt if majority has won in 2018, you belong to the group of winners so you are lucky.
But like you said, you don't have record, I think you could also be wrong, you might forgot your losses.
He still won that money even is less than $100, and if that winning money happened in one time shoot, then he is a very very lucky person
But I guess he can check on his history account so he can find how much he won in 2018 and perhaps, the amount will bigger than he expected. I don't earn much money either, but I am glad that I could still play gambling and I think I am one of the lucky people.