Introduction
Exercises

## Instruction

Keep going! You're halfway through!

## Exercise

Count how many games were released each year, what was the average cost of production and what was their average revenue.

### Stuck? Here's a hint!

You'll need four columns:

• production_year
• COUNT(...)
• AVG(...)
• AVG(...)

And you'll need to group your results by the production_year column:

GROUP BY production_year