thank you for contacting wefugees. I guess your question is very interesting for many others!
you'll find a very detailed statistic here:
In addition I would like to draw your attention to the party "Die Linke": They ask the government regularly about Dublin and then publish the answer / statistics on their homepage.
Please note that the statistics you'll find there is only numbers. To give you good advice about your (or someone else's) individual case, I recommed you make an appointment with a refugee advisor near you.
Or you contact me via "mbeon", a free and confidential app where you can discuss your questions with professional refugee advisors.