GDP C I G X IM Year I ...... 750 110 60 70 50 Year II 1,150 930 90 75 125 ....... refer to the above table, If real GDP equals 1,000 in year I, then we will have unplanned inventory depletion of 100. real GDP is less than AE. unplanned inventory investment is zero. we will have an unplanned invetory increase of 60