The best thing one could do I think is to go back to past trends.

And those past trends show about three hundred a year.

Which is is again just assuming past trends will continue.

These past trends may or may not continue into the future.

But the problem this year is that some past trends do not apply to the future.

The company said that because of past trends, it expected traffic to double worldwide over 15 years.

The encyclical contains a critique of past intellectual trends and a look ahead.

And there are indeed some indications that this Christmas season may run counter to past trends.

Taken alone, linear extrapolation of past trends can give unrealistic results.

While past economic trends can guide you, I tend to use my gut feeling to make decisions.