InventoryTurnover ( Symbol symbol , int fiscalPeriod );    
Default values:
symbol: current symbol
            fiscalPeriod: FiscalPeriod.YEAR
    
    
Description
The InventoryTurnover function returns the ratio of cost of goods sold by a company to the average of last year's and current year's inventories. By default, this value is calculated for the currently selected symbol. To specify a different symbol for this function, modify the value of the symbol input parameter. The function only uses yearly fiscal data so the FiscalPeriod.QUARTER constant is not compatible with its input parameter fiscalPeriod.