Campsite Occupancy Survey National Data by categories. Demand Overnight stays of travellers by category of establishment and months. Units: number ;Total;January;February;March;April;May;June;July;August;September;October;November;December; Total;36,639,715;1,021,248;1,070,824;2,001,701;1,751,884;2,346,489;3,457,378;7,522,724;10,424,527;3,345,692;1,707,881;943,648;1,045,719; Luxury and cat. 1;17,270,218;422,762;447,022;856,821;822,477;1,128,976;1,720,500;3,692,376;5,074,482;1,577,952;729,893;376,436;420,522; cat. 2;17,112,344;560,834;580,671;1,029,735;836,531;1,099,815;1,533,436;3,310,463;4,591,870;1,579,898;889,915;520,600;578,575; cat. 3;2,257,152;37,652;43,130;115,146;92,876;117,698;203,442;519,885;758,174;187,841;88,073;46,611;46,622; Notes: Source: National Statistics Institute