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 36,639,715 1,021,248 1,070,824 2,001,701 1,751,884 2,346,489 3,457,378 7,522,724 10,424,527 3,345,692 1,707,881 943,648 1,045,719 Luxury and cat. 1 17,270,218 422,762 447,022 856,821 822,477 1,128,976 1,720,500 3,692,376 5,074,482 1,577,952 729,893 376,436 420,522 cat. 2 17,112,344 560,834 580,671 1,029,735 836,531 1,099,815 1,533,436 3,310,463 4,591,870 1,579,898 889,915 520,600 578,575 cat. 3 2,257,152 37,652 43,130 115,146 92,876 117,698 203,442 519,885 758,174 187,841 88,073 46,611 46,622 Notes: Source: National Statistics Institute