From this screen, a summary of sales invoices by fiscal period and year is displayed for every period that has at least one invoice posted, sorted with the most recent period at the top. You can see the totals sold for each month, along with gross profit, sales margin, and average selling price and cost of sales.
Statistics only display for the 3 open fiscal years, and not for any fiscal years prior to these. If a fiscal period does not have any sales of this item, that period will not be listed, rather than show a row of all zeroes. And this list is strictly for statistical display, without the ability to edit or drill-down.