Question: Since what year has the anthem which gradually supplanted the Sturmlied as the de facto anthem of the SA been banned in Germany?
Sentence (from "Act on National Flag and Anthem"): The Act on National Flag and Anthem (国旗及び国歌に関する法律 , Kokki Oyobi Kokka ni Kansuru Hōritsu ) (abbreviated as 国旗国歌法 ) is a law that formally established Japan's national flag and anthem.
Relevant evidence: No