 Slovakization of the Rusyn population increased in the times of the Czechoslovakian authorities (since 1920).The Greek Catholics and Orthodox started to perceive themselves as Slovaks.It is difficult to estimate the distribution of the Orthodox and the Greek Catholics by the language as well as to determine the number of Rusyns because both the Hungarian and Czechoslovakian censuses provided the incorrect number of Rusyns, but it contains roughly 50-100 000 people.