Holding 38 rallies in protest against wages since 2021: Who were the most protesters?

Etemad newspaper wrote:
Investigations of the official news published from the beginning of 2021 to November 1 of this year showed that in the last 46 months, municipal workers have protested 100 times in protest gatherings or in the media against their outstanding demands.
According to this study, in 2021, 38 cases of gatherings or protest plans were recorded, in 2022, 22 cases of gatherings or protest plans, in 2023, 21 cases of gatherings or protest plans, and from the beginning of April this year to November 1 of this year, 19 cases of gatherings or protest plans were recorded, and out of a total of 100 gatherings or media announcements of protests in these 46 months, 38 cases of protest gatherings were specifically recorded It has been one or more days in front of the municipality building and the city council, the governor's office, the governor's office, or the judicial authorities by the workers of the municipalities.