It’s not like we don’t know anything about the dark figures. The first rigorous approach seems to be this one:
Dunkelfeldforschung in Bochum 1986⁄87 by Hans-Dieter Schwind
This is in German, but an executive summary in English can be found on page 290 ff.
We know enough to know that statistics like the one you cited shouldn’t be treated as being the actual values and that was the main point I was making above.
It’s not like we don’t know anything about the dark figures. The first rigorous approach seems to be this one:
Dunkelfeldforschung in Bochum 1986⁄87 by Hans-Dieter Schwind
This is in German, but an executive summary in English can be found on page 290 ff.
We know enough to know that statistics like the one you cited shouldn’t be treated as being the actual values and that was the main point I was making above.