In the following table, categorize each of the following cases either as a flow variable or a stock variable.

Flow

Stock

The value of a rare coin

The amount by which a rare coin increases in value each year

The number of bags of rice a grocery store sells in a day

The amount a company borrows in any given year by issuing bonds

The number of bags of rice on the shelf at a grocery store

The total value of all of a company's outstanding bonds