Definition
These details about the availability of basic groceries at the nearby market during the last year. Groceries in question here consists of rice, sugar, cooking oil, kerosene, milk, eggs, meat, corn and salt iodine.
Always there is a kind of basic foods if they are always there in the market / stalls.
Sometimes there is when one or more of the basic food types have nothing on the market / stalls.
Often there is when one or more of the basic food types often do not exist in the market / stalls.
None is when one or more of the basic food types do not always exist in the market / stalls.