for instance,
soybeans have reduced in value since the financial collapse. they have been rising recently due to the us drought. but they remain lower than prices in 2008.
therefore i think you may be referring to a rise in soybean prices between 2002 and 2008.
sure. but i think we are talking about the current environment, rather than policies in the bush years.
http://futures.tradingcharts.com/historical/SB/2008/0/continuous.html