Industry statistics - How we can make them more suitable to our needs ?

I was wondering how much we relate on the data provided here on industry reports.
It obviously depends on the quality, quantity & timeframe of data we have access to.

I recieved some guidelines from my mentor concerning industries with high gross margins ( over 20%)
On industry reports, I saw the average was much under what I expected.

What i just find out is ...

... When you point on any graph you can see a result in a particular year. By doing that, you can simply calculate how the industry performed in your selected timeframe.

You don't have to rely on the full range of the chart ( for some###-###-#### Just calculate the average of the years you're interesed in.

Maybe for some of You it is quite obvious, but I spend few moment on finding out how to do this.

Hope it will help someone.