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