Campsite Occupancy Survey National Data. 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,22,153,612,418,039,411,693,543,427,1,260,437,927,410,1,464,559,5,407,586,8,644,425,1,701,751,631,159,344,942,398,179, Luxury and cat. 1,8,987,498,134,557,131,818,199,709,528,776,398,634,626,784,2,289,162,3,426,700,719,339,258,343,130,959,142,712, cat. 2,11,370,863,265,974,263,048,316,446,634,154,455,985,703,923,2,674,674,4,457,472,835,825,331,341,196,031,235,986, cat. 3,1,795,250,17,507,16,826,27,271,97,506,72,790,133,852,443,749,760,252,146,587,41,474,17,952,19,479, Notes: Source: National Statistics Institute