DECLARE Sales_data(1900 TO 1994, 1 TO 12)
  Month_start% = LBOUND (Sales_data, 2)
  Year_start% = LBOUND (Sales_data, 1)
  Month_end% = UBOUND (Sales_data, 2)
  Year_end% = UBOUND (Sales_data, 1)
  FOR Year% = Year_start% TO Year_end%
        FOR Month% = Month_start% TO Month_end%
              PRINT Sales_data(Year%, Month%)
        NEXT Month%
  NEXT Year%