Proprietary sales volume data

I've noticed GRB has a tendency to report sales volume and sales revenue interchangeably in results reporting and often only offers information on % changes in them in relation to proprietary sales. Figures are available in aggregate form but not via sales channel.

I have found research that says proprietary brand sales earn 65% margins from WOW, 70% from independent retail stores and 80-90% for on-premise.

I have seen the sales volume figures management is banking on for FY21 in respect to on-premise (2m litres) and retail (WOW and indepedent) (5.5m litres) to hit there $1/L EBITDA expectations but can't seem to find any definitive volume figures for these channels as at FY16. Due to the margin differences between channels it would be interesting to see how much growth is required in each channel today to hit the FY21 budget figures.

Is anyone able to point me in the direction of management having published this information recently?