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;40,720,537;1,097,811;1,167,242;1,482,760;2,678,460;2,668,449;4,456,247;7,961,345;10,915,513;3,903,995;1,961,457;1,187,609;1,239,648; Luxury and cat. 1;18,975,219;462,386;515,417;619,144;1,219,768;1,269,315;2,143,312;3,860,218;5,137,619;1,852,242;924,159;460,399;511,241; cat. 2;18,632,135;580,006;591,894;759,743;1,299,137;1,253,686;1,952,215;3,407,512;4,757,643;1,771,216;920,673;663,837;674,573; cat. 3;3,113,183;55,420;59,931;103,873;159,555;145,448;360,720;693,615;1,020,252;280,536;116,626;63,373;53,835; Notes: Source: National Statistics Institute