How much is the value of the 'real' (and therefore BZF) subject to the price of oil?

I believe that the 'real' is strong because of positive trade balance, strong exports, positive national budget, etc. To some extent this is helped by oil, but to what extent?

The downward short term price of oil may pressure the 'real', but the potential for their longer term oil reserves is tremendous. Add in the agricultural commodities and the Brazilian future is bright.