You should work for: Stasi - East Germany. 75%
Ruthlessness, coldness, and bitterness. Is there any other way to describe you? You are the most "effective" spy there is, albeit at a cost of your basic feelings of humanity.
Next in line...
KGB 70%
MI6 50%
CIA 45%
DGSE 40%
Mossad 10%
Test needs improvement, for instance, "When was your height?" should have had the answer "Now." Also needs a wider selection of intel agencies.... GCHQ, AIA, AIS, DIA, CSS, GRU, ONI, NRO, etc.