score:2
What @MarkJohnson suggested worked out pretty well. I contacted the Homepage - German Federal Statistical Office
They were very helpful and did a cursory search of their archives for free and gave valuable tips.
The information I have thus far: The most extensive source for city-level data in Germany is the book series "Statistisches Jahrbuch Deutscher Gemeinden" resp. "Statistisches Jahrbuch Deutscher Städte" before 1934. The economic data I was looking for was sadly not in the pre-WW2 books. I'm now kind of assuming that the type of data has not been aggregated for that time period.
ETA: I got the information from the Japanese statistical bureau that this type of city-level data probably doesn't exist for Japan (in an aggregated form).
Upvote:1
Even though I am a native Japanese speaker, it is too difficult to pinpoint the city oriented data propr the WW2.
According to our famous university'd data, ,
based on the 1990 dollar base, the gross domestice production per capita as of 1935 of Japan is around 2000,(日本), while Britain(英国) 5,900, the U.S 5,700(米国).
For the reference.