Is it possible to get the number of hidden items to display in showMoreText?

When there are more items in a refinementlist than the display limit (show more button is present), I want the showMoreText button to display “Show X more” where X is the number of items that are currently hidden (total items in refinementList - initial refinement shown count). Is there a way to get the total number of items for each refinementlist rendered on a page that showMoreText could access to display this messaging to the user?