It depends on many factors including but not limited to how it is kept before it is opened, how it is kept after it is opened and the nature of the particular wine itself; in terms of the last of these, many wines today are arguably reflective of the instant gratification that is so prevalent an expectation in other things in that they are made for consumption within a short time of bottling, whereas some of the great classics can survive and continue to mature in bottle for many years.