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Japan Chain Stores Associate's data on Monday showed a decline in Japan's supermarket sales in December after climbing in the previous two months.
Supermarket adjusted sales fell 2.0 percent year-over-year in December, compared to a 0.8 percent rise in November.
Before store adjustment, sales decreased 1.8% in December from last year.
Supermarket sales increased 17.7 percent on a monthly basis at the end of the year.
