How many crickets a week do bearded dragons eat?

Our Dragon is 6 years old and only occasionally eats crickets and/or mealworms. She'll eat about 18-24 crickets in a serving once a week. However, she enjoys stringbeans, mixed green salad (not iceberg lettuce or spinach since both are not good for a dragon), grapes, and strawberry (cut up). If you're giving your Dragon these foods, you don't really need the live food all that often when they're mature.