Польша:

The index indicates the level of fish and seafood prices in Польша relative to other countries. Higher values of the index mean higher prices. The data are provided by the International Comparison Program of the World Bank, 2021 edition. The series are updated every four years. The fish and seafood price index for Польша and other countries remains largely valid for about 5-10 years. Глобальные рейтинги по этому показателю доступны здесь. Вы можете сравнить тенденции с течением времени здесь.