where to find specialty stats

does anyone know where i can find the following information:

1. how many spots per specialty available each year?

2. percentage of applicants accepted to each specialty each year.
or how many students apply for each specialty.



so far i know this much:

1. in the ADEA admissions requirements manual they said 20% of all dental students go into specialties.

2. there are around 2000 students accepted to dental schools

3. there are 275 spots each year for orthodontic specialty