That's a good question. If I was looking into it, I would look at farm gate prices for various farm products, that the USDA collects. For example, prices receiv

That's a good question. If I was looking into it, I would look at farm gate prices for various farm products, that the USDA collects. For example, prices received for grains: https://www.nass.usda.gov/Charts_and_Maps/Agricultural_Prices/pricegr.php https://www.nass.usda.gov/Charts_and_Maps/Agricultural_Price...