&nbsp;If you gave these subsidies back to the taxpayers, earmarked for the same purchases, 146 million Americans could buy 20&amp;#160;Twinkies each and just half an apple each year, according to a Tuesday report by U.S. PIRG, the federation of state Public Interest Research Groups. U.S. PIRG, an advocacy group that acts as a consumer watchdog, blames the priorities of the subsidies on lobbying by the big agricultural corporations.