In 2012 sparkling wines grew about 4.5%, per IRI data, and remain a category that industry experts are keeping an eye on this year. So how is the category doing so far? On top of a 6-cent price increase, both volumes and sales for the category have soared. Year-to-date for May 19, which is pretty close to halfway through the year, sparkling wine sales are up 22.2% and volumes are up 21.3% in all IRI-measured channels.