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