The forecasted household expenditure on mackerel in Japan shows a consistent decline from 2024 to 2028, with figures starting at 649.71 yen in 2024 and dropping to 590.34 yen by 2028. This trend indicates a steady decrease in spending, with an annual drop of around 2-3%. Notably, the household expenditure was significantly higher in 2023, contributing to this downward trend.

Future trends to watch:

Potential substitution by other seafood due to price changes or consumer preferences.
Impact of global fish supply and any changes in fishing regulations on mackerel prices.
Shifts in dietary trends and health considerations among Japanese consumers.