Yeah if you have only 50 names the frequency of Asian names would remain the same, it would just pick among those 50. You would see the same number of Asian players but less variety in names. The numbers inside the file determine the frequency of the name inside the file.
Eg:
Jones 3
Smith 1
Rogers 1
Jones would be picked 60% of the time the file is needed.
Any questions, feel free to ask, I just played around with name files for a week