View source for Schema:Attendance

{
	"description": "Annual attendance record for a museum, used as child subjects on museum pages.",
	"propertyDefinitions": {
		"Year": {
			"type": "number",
			"required": true
		},
		"Visitors": {
			"type": "number",
			"minimum": 0,
			"precision": 0
		},
		"Source": {
			"type": "url"
		}
	}
}