I see it is from 2013, could somebody explain why is it interesting five years later? I don't say it isn't, just wondering.

current levels of approximately 9-12 grams per day

That seems like a lot. I'm pretty sure I don't use so much, even if I like salty food compared with people around me.

I do know that salt comes with a lot of prepared food, but most of it has been considerably reduced. And I don't eat much prepared food anyway.

So if it's a real number, someone must be eating spoonfuls of salt to raise the average :)