According to this 2015 report in The Chronicle of Higher Education, the enrollments in Philosophy courses at Tübingen increased by nearly one-third, to 1,600, in the past three years. The philosophy departments at Albert Ludwigs University of Freiburg and Goethe University in Frankfurt am Main, now have to impose limits on enrollments in Philosophy classes.
At the German universities it is not the norm to major in Philosophy alone. Students usually have at least one other major.
Another factor is the free education at the universities. This means there is less pressure to major in subjects that will help pay back student loans.
The German media also appears to be more sympathetic to philosophy, perhaps in recognition of the great contribution Germans have made in Philosophy.
These factors make the study of philosophy much more attractive to German students.