Presuming that excludes the ones given from the inbox messages, I’m going to go ahead and say you’ve been quite lucky. 
If so, that’s worthy of sharing in The Ridiculous Bragging thread.
Do you have a sense of where in particular you’ve been getting so many from? Did you get an Elemental Chest? Are you seeing them show up in regular chests a lot? For that large quantity it sounds like it’d have to be a fair bit of luck with both.