Where can I find information about the DUI statistics for Los Angeles?

I want to know:

1. How many cases are charged each year;
2. How many cases go to trial;
3. How many cases plead guilty;
4. How many Los Angeles DUI cases are dismissed or reduced to non-DUIs;
5. What percentage of attorneys take cases to trial each year.

Is there information out there that breaks this down by Los Angeles County city? By attorney?