Zeus Computer Chips, Inc., used to have major contacts to produce the Centrino-type chips. The market has been declining during the past three years because of the dual-core chips, which it cannot produce, so Zeus has the unpleasant task of forecasting next year. The task is unpleasant because the firm has not been able to find replacement chips for its product lines. Here is demand over the past 12 quarters:
2007 Quarter 1 - 4800
2007 Quarter 2 - 3500
2007 Quarter 3 - 4300
2007 Quarter 4 - 3000
2008 Quarter 1 - 3500
2008 Quarter 2 - 2700
2008 Quarter 3 - 3500
2008 Quarter 4 - 2400
2009 Quarter 1 - 3200
2009 Quarter 2 - 2100
2009 Quarter 3 - 2700
2009 Quarter 4 - 1700
Use the decomposition technique to forecast the four quarters of 2010.