Zumba and the database

Has anyone ever noticed that Zumba is not in the database for exercise updates? I am in a competitive Zumba class that meets once a week. I have to search for Aerobics and then choose high impact, but I am unsure how acurate the calorie count is in that. I have read that Zumba burns about 1000 calories, but I am unsure of that number because the numbers change depending on the search I do. Does anyone have the statistics for this? I'd appreciate your help.