WASHINGTON (AP) — The number of U.S. farms is declining even as the value of their crops and livestock has increased over the past five years, a government census of American agriculture released Thursday says.

The survey, taken every five years, shows there were a total of 2.1 million farms in the United States in 2012, down a little more than 4 percent from 2007. That follows a long-term trend of declining numbers of farms.