Perhaps this has been discussed before:

I recall reading about countries and the relationship of their cultural values to type. What do you think is the Socionic type of your country?

I think the Dutch are ESTjs: a sort of Germans (ISTj), but different: just as opinionated, but this is expressed more verbally (Germans do it more non-verbal), but even then, at the end of the day most Dutch will have a live-and-let-live-attitude and say: "if you don't interfere with my business, I won't interfere with yours (but I still think you're an idiot)."