A hundred stones on a first flush is pretty impressive! A lot of people don't pass anything until their third or fourth flush. Liver Flushing is not a competitive event, it a step toward better health. While its interesting to read about huge stones and great quantities of stones in a single flush, the most important thing for each individual is that they are ridding their body of accumulated toxins. When the liver becomes less congested the whole body benefits.
Since you are young, you may only need a couple of more flushes to become stone free.