It is, in fact, possible to create graphs in reports now. Reports accept plug-in extensions written in Java. A plug-in can access data in a report and implement functionality to generate a chart as an image, which will then be displayed as an integral part of the report.
It would be a straightforward task for a Java programmer to write an Aware IM report plug-in that would effectively be an adaptor between Aware IM and some existing Java class library (such as JFreeChart) that generates charts from a data array. Aware IM Programmers Reference has detailed information on developing Aware IM plug-ins including the report extensions.