Farm census

A summary of the 2012 agricultural census in the SF Chronicle reports that there are over 2 million farms in the US, a number slightly down from the peak in 2007. While 3/4 are small, producing less than $50,000 in sales, the rest are making a total of about $320 billion. I guess that's an average of just about $610,000 per farm, though, and it sounds like it's revenue, not profit. I thought maybe that the real action is in farming the government, but I found a summary of the report, and just $8 billion came to farmers in 2012.