Of course it seems to neglect to mention the lack of censuses since the 80s as Germans think they're eeeeeeeeeeeevil (at least that is what my (German) hubby told me.
They did do a census in the 1980's. There were a lot of public protests and demonstrations against it, although the government kept repeating that no names would be stored, just statistical data.
Some people even burnt their census forms in public.
After that, we were then told that in future there would only be be a "mini-census" - a random 10% of the population would be asked. That seems to have died a death somewhere along the line. I am sure that the data is already available in various government databases - it is just a question of collating it.
Germans think they're eeeeeeeeeeeevil
When Hitler came to power, every german had to have an Ahnenpass - an Ancestor Passport.
(see
http://en.wikipedia.org/wiki/Ahnenpass )
People had to enter details of their ancestors, and although theoretically this was simply to prove or verify Aryan-ness it was also (mis)used to search out jewish and part-jewish citizens.
Many people burned their Ahnenpass after the war, others kept them (to the delight of of their descendents who are now researching the family history).
After generations of prussian and nazi and DDR burocracy many Germans still have a deep-seated mistrust of data collecting. There are very few database for german "RootsChatters". Unlike RootsChat, where detailed family histories can be put together, the german FH forums tend to help by publishing lists of name interests, deciphering old documents and supplying addresses, where you can go and check out certificates and registers. And you often have to prove direct relationship before you can order copies of certificates.
Bob