How many bills the caller can see stand at each status: invalid, valid, sent to the ERP, rejected by it, settled…

How many bills the caller can see stand at each status: invalid, valid, sent to the ERP, rejected by it, settled (closed in the ERP or waived), and closed and waived on their own. One row. With p_since, only bills whose status changed on or after it are counted; without it, every bill.