The following table shows the sales for a plastics manufacturer recorded over the past year. The seasonal indexes for each quarter are also provided. To track the trend for these four quarters, use the indexes to deseasonalize the sales data. 
Overall, sales are ___________.
Definitions:
Common Resource
A resource like air or water that is not owned by anyone, but available for use by everyone, often leading to overuse and depletion.
Common Resources
Goods that are non-excludable and rival in consumption, such as fisheries, forests, and the atmosphere, which are accessible to all but can be depleted by overuse.
Overuse
Refers to the excessive use of a resource to the point where it diminishes its availability or quality.
Common Resource
A resource like air or water that is not owned by anyone, cannot be easily excluded from use, and is available for use by more than one person or group.
Q30: Which of the following is true of
Q39: Which of the following business valuation organizations
Q61: Two movie reviewers gave their ratings (0
Q78: The wholesale price of a straight back
Q84: The national sales manager for "I colored
Q120: In testing the significance of Spearman's rank-order
Q120: Over the last ten days, a manufacturer
Q124: To calculate quarterly typical seasonal indexes, how
Q152: If we are testing for the difference
Q159: Which chi-square distribution would be closest to