This chart goes back 5 years:

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&uact=8&ved=0ahUKEwijnKi20IrcAhVK7YMKHZMmDC4QFggxMAI&url=https%3A%2F%2Fwww.indexmundi.com%2Fcommodities%2F%3Fcommodity%3Dsoybeans%26months%3D60%26currency%3Dbrl&usg=AOvVaw1L5zep3CbjYqgyxh6DKIgG

What do you see compared to the last 5 years?

This is why ignorance is risky.  You don't see the logic.

Relative currency value, must consider.