thousand island dressing recipe

1 cup mayonnaise - 1/4 cup ketchup - 1 tablespoon white vinegar - 1 tablespoon sweet pickle relish - 1 teaspoon finely chopped onion - 1 teaspoon finely chopped green bell pepper - 1/2 teaspoon garlic powder - 1/2 teaspoon paprika - Salt and black pepper to taste