Campsite Occupancy Survey National Data. Supply Estimated number of establishments open by category and months. Units: number ,January,February,March,April,May,June,July,August,September,October,November,December, Total,414,419,548,764,792,1,046,1,104,1,107,1,068,557,443,436, Luxury and cat. 1,88,88,113,171,182,213,225,225,219,125,97,93, cat. 2,252,257,338,465,470,622,651,655,632,328,265,261, cat. 3,74,74,97,128,140,211,228,227,217,104,81,82, Notes: Source: National Statistics Institute