Campsite Occupancy Survey National Data by categories. Supply Estimated number of vacancies by category and months. Units: number ;January;February;March;April;May;June;July;August;September;October;November;December; Total;251,396;284,871;357,875;567,162;631,097;724,601;762,415;764,645;676,503;424,958;305,621;272,875; Luxury and cat. 1;105,498;124,515;145,721;239,291;277,722;313,063;322,027;322,482;289,064;180,141;125,588;114,070; cat. 2;129,290;140,532;180,385;279,612;298,019;336,109;354,760;356,156;317,243;208,874;156,711;141,203; cat. 3;16,608;19,824;31,769;48,260;55,357;75,429;85,628;86,007;70,196;35,943;23,321;17,603; Notes: Source: National Statistics Institute