Technical Report
Considering this report was compiled by a university researcher who pulled a good deal of his data from El Reg, it sounds like a days worth of serious work and a bit of polishing (possibly), the sample size is small enough to not really mean a great deal, particularly as it focussed on only those cases linked to the CMA Act. More detailed research to pulled out all cases involving computer related crimes over a similar period may paint a completely different picture.
as pointed out by the majority of posts above, the value of the research as a profile of likely offenders will mostly show the profile of the least successful offenders, so not all that valuable.