Ann: 2017 AGM Presentation, page-31

US ACV is $7m pa (as at 30/6/17) and guidance is for that to double in FY 2018. It wouldn't surprise me if they greatly exceeded that now that they are "established" in the US.
But, time will tell.

Obviously, its very disappointing to see the SP at current levels. Its anyones guess as to whether it goes up down or sideways short term but longer term, I'm optimistic and we could get dramatically increased sales numbers for the US at any time.