A new poll came out right before Christmas: How many believe in the Virgin Birth.
(Umfrage des Markt- und Sozialforschungsinstituts INSA-Consulere -Erfurt; as found in IdeaSpektrum 52/53 2020; page 6)

All Germans
23% = Believe in the Virgin Birth
43% = Do not believe it
22% = Don't know
12% = No answer

How many believe in:
State Churches:
30% = Evangelical Lutheran
29% = Catholic

57% = Free Churches
39% = Islam
10% = no Confession