In 2022, 323,966 theses were examined using the Uniform Anti-Plagiarism System (JSA).
The alert threshold, set by default to a level when the similarity of the thesis to another source text is greater than 70 per cent, was exceeded by less than 1.7 per cent of the theses examined.
A decrease was observed, therefore, in the three years since the system’s launch, when 2.5 per cent of the texts examined exceeded the alert threshold.

More on the MEiN website:
https://www.gov.pl/web/edukacja-i-nauka/maleje-liczba-prac-dyplomowych-podejrzanych-o-plagiat