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;39,158,714;1,087,933;1,113,666;1,894,500;2,189,274;2,641,848;3,866,059;7,797,459;10,538,184;3,768,210;1,958,045;1,124,485;1,179,053; Luxury and cat. 1;18,223,647;462,347;480,408;745,956;1,006,881;1,314,160;1,932,502;3,780,517;4,952,475;1,734,196;865,569;451,383;497,254; cat. 2;18,083,607;585,176;580,685;1,013,300;1,072,961;1,210,981;1,720,139;3,337,697;4,633,786;1,719,984;980,321;606,970;621,607; cat. 3;2,851,460;40,409;52,572;135,244;109,432;116,708;213,417;679,245;951,922;314,030;112,155;66,131;60,192; Notes: Source: National Statistics Institute