I think the best approach for this would be to create an XML page with a div which has a specific xml:id; that id triggers the output of a sequence of divs, each one of which is constructed to target a specific count.

This works in the most obvious sense; anyone can create content outside the trigger div which would put the whole page in context. But it wouldn't allow the editors control over what stats are actually displayed. So I think we need something more granular. I think we need a page which includes a block of JS, and a table of rows; each row is read by the JS and becomes part of an array which is sequentially populated with data through AJAX. The original table is editable so that editors can determine what stats are actually displayed.