An entity has a database that it purchased five years
ago. At that date, the database had 15,000
customer addresses on it. Since the date of
purchase, 1,000 addresses have been taken from
the list and 2,000 addresses have been added to the
list. It is anticipated that in two years' time, a further
4,000 addresses will have been added to the list. In
determining the value-in-use of the customer lists,
how many addresses should be taken into account
at the current date?