The proper punctuation for the sentence below, according to APA style, which uses the Oxford comma. (Write out the complete sentence.)
 

Because of the weak U.S. dollar farmers some of whom have not fared well economically in 2005 are getting better prices for their crops while U.S. exporters are also showing more profits however the U.S. trade deficit continues to grow.
 
 

Answer in the form of a question