Oh, there are less members every year, but the church is wealthy and controls the rural areas in conservative regions. It takes advantage of these structures of the country, and the conservative political parties will do everything to support it. Admittedly, Bavaria is the most extreme case, but some other regions aren't far behind (e.g. Rhineland-Palatinate). Maybe removing the state privileges would help a bit, but there is no political will to do so, not much awareness in the population, and the churches (not just the Catholic one, mind you) will do everything to prevent it.