Reliable source to check monthly arrivals to DR?

I gave up searching, I checked the forums, I checked google (I don't need numbers from 2005...) but, nada, (or I am to dumb to search right :ermm.

So, please, if anybody can let me know, if there is a page / source, where I can see the monthly passenger amount of arrivals at the different airports in DR?

I checked bancocentral.com.do etc, again, nada. (And I would like a third party source, not a Dominican Government Source).

Maybe another one, somebody? Not dominican government related? Just for comparing these numbers...