In the most recent Dietary Guidelines for Americans, the USDA recommended that we consume 6 ounce equivalents of grains per day, half of which should be whole grains.
According to the U.S. National Health and Nutrition Examination Survey (NHANES), whole grain intake increased across all age groups from 2003 to 2014 from 0.6 ounce equivalents per day to 0.9 ounce equivalents per day. During that same period, intake of refined grains decreased from 6.3 to 5.7 ounce equivalents per day.