@Gailsie -
After the ill-fated thread started, I took a bit of time to see what resources were actually available. Things ended badly before I completed the project.
Here are my findings:
1) I found no Camino-specific resource.
2) I found no current (as in constantly updated) resource even for Spain. Depending upon what crime and what region one examined, the stats may only be as recent as 2012 or 2013. The site to which I am referring is here:
http://www.ine.es/jaxi/tabla.do?type=pcaxis&path=/t18/p466/a2013/l1/&file=02005.px
It belongs to "Instituto Nacional de Estadistica" which is THE agency responsible for assembly of crime data in Spain.
The link above goes directly to a page for
"Convicted persons statistics: Adults. Year 2013" and you can search by selecting for Type of Crime and Place of Sentence which is given regionally, if desired.
I am not sure that it will be easy to "scale" results given against whatever your metric may be. So, I offer a generic site for comparison:
http://www.nationmaster.com/country-info/compare/Spain/United-States/Crime#2014
While it defaults to a "Spain vs. US" comparison, you may back out on the menu and substitute another country for base reference.
It does suffer the same defect of lack of recency but I do not see any way around that...it takes time for number-crunchers to do their work.
You could try Interpol, I guess that I did not go there as they tend to be engaged for high-profile cross-border issues - - or so that was my impression.
Good luck!
B