Hi,
I am from Germany and had a similar question, only concerning another
band. I can help you out with the "german" part of your question,
though not the "english" one.
The official charts in Germany are done by the firm "Media Control"
(http://www.media-control.de/charts.htm), that's why they are often
called "Media Control Charts". However, you usually have to pay for
their services. The magazine for the German music business
"Musikmarkt" is the orderer of these charts and publishes them in
there magazine.
At their website however you can access the Top 100 back to 1998
(http://www.musikmarkt.de/content/charts/charts.php3 - click on
"history) free of charge. If you want older charts, you can go to a
big library and look them up. I know that for example the "New York
City Public Library" hast the older issues in store
(http://catnyp.nypl.org/search/smusikmarkt/smusikmarkt/1,2,2,B/frameset&FF=smusikmarkt&1,1,).
Bye,
Robert |