how would you say the numbers as a year, ex: 1985, do you just say them independently? Or is there a formula?

The thousand digit is enunciated independently.
The hundred digit is also enunciated independently
The ten and one digit are enunciated according to Haitian Creole numbers principle when counting from 1 to 99.  See the link for Counting to 100

1985 → mil

1985 → nèf san

1985 → katrevensenk

1985 → mil nèf san katrevensenk

1223 → mil
1223 → desan
1223 → venntwa
1223 → mil desan venntwa

2012 → demil
2012 →
2012 → douz
2012 → demil douz

Ask me anything