1. projection (n.) - a prediction
Example: Population projections show a significant loss in the city up to the year 2010.
2. milestone (n.) - a significant event
Example: A milestone in the history of technology has been reached when mobile phones were invented.
3. trend (n.) - general tendency or direction leading to a point/situation
Example: Trend in mortality was evaluated by computing mortality rates and birth rates.
4. to take stock (v. / idiom) - to take account of the stock of; to take an inventory of; hence, to record the facts in regard to (something).
Example: The department store closes down for 3 days every March in order to take stock.