Dooley Retail Outlets' total retail sales volumes for selected years since 1982 are shown in the following table. Also shown is the CPI with the index base of 1982-1984. Deflate the sales volume figures on the basis of 1982-1984 constant dollars, and comment on the firm's sales volumes in terms of deflated dollars.

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Retall Sales () 380,000 520,000 700,000 870,000 940,000 990,000 Year 1982 1987 1992 1997 2002 2007 CPI (1982-1984 base) 96.5 113.6 140.3 160.5 179.9 207.3