Hi Kevin
You can get that information through the HRA On-Line quarterly PDF Reports link which you find at the bottom of each sires progeny summary. You need to be registered which is for free, but the data is all there. I quickly checked for Im Stately, and while the 2015/16 report is not as yet finalised, it would appear he had no mares sent to him as he is not on the list of stallions.
Regards
Mark