Because BAS is intended to provide meals for the service member, its level is linked to the price of food. Therefore, each year it is adjusted based upon the increase of the price of food as measured by the USDA food cost index. This is why the increase to BAS will not necessarily be the same percentage as that applied to the increase in the pay table, as annual pay raises are linked to the increase of private sector wages. As of 2010, enlisted members receive $323.87; warrant officers and commissioned officers receive $223.04 per month. As of 2018, commissioned officers receive $254.39 per month.