Dominican Republic, new composition of 5 pesos, and mintages

I've found out that 5 pesos 2008 of the Dominican Republic can have two different compositions of the central part: stainless steel (like all the previous years, magnetic) or copper-nickel (non-magnetic). I have both coins, and also there's information about them at the cover of the official mint set that I bought in the Central Bank of the Dominican Republic. Also there you can find mintages for all their coins of 2008.

Hello.
http://monnaiesetvarietes.esy.es/FICHES/Republique%20domicaine/REPUBLIQUE%20DOMINICAINE%205%20Pesos%20KM%20%2089.pdf
Michel