Exports have to be weighted with profits-costs relationship. An import always concern consume or costs, at least if that consumption is not due to wealth accumulation. Exports have to be weighted because if revenues are higher than costs and profits are over the profit margin set tacticaly by the Federal Reserve target, those exports doesn't give anything of value to the economic performance on the yearly business cycle. X should be weight on my formulae as...
{[(Costs+%profits)÷revenues]×eXports} - wages abroad*
*if they are not calculated previously in the overall economy