This is the 3172nd most frequent Polish word.
rocznie
"Rocznie" means "annually" or "per year" in English.
The word 'rocznie' in this sentence describes an occurrence or condition within a year, specifically the average earning on a yearly basis.
Przeciętnie zarabiamy około 60 tysięcy złotych rocznie.
On average, we earn about 60 thousand zlotys annually.
Here, 'rocznie' specifies the production quantity over the span of a year, indicating the yearly output.
Rocznie produkujemy pięćset samochodów w naszej fabryce.
We produce five hundred cars annually in our factory.
In this context, 'rocznie' refers to the total water usage amount per person over the course of one year.