Statistical data IV.2. Medium-term deprivation of liberty IV.2.1. Foreign national detention centres 206. According to data from the Ministry of the Interior, in 2016 there were a total of 14,558 undocumented arrivals in Spain via unauthorised border points (arrivals on illegal vessels), thus indicating a fall in undocumented arrivals with respect to the 16,851 registered in 2015. Table 23. Undocumented arrivals via unauthorised border points in 2016 UNDOCUMENTED ARRIVALS IN SPAIN MAINLAND SPAIN 7,380 CEUTA 2,542 MELILLA 3,901 CANARY ISLANDS 705 BALEARIC ISLANDS 30 TOTAL 14,558 Source: Produced in-house using data provided by the DGP (General Headquarters for Immigration and Border Control) 207. Of the total 35,882 foreign nationals detained, 7,597 were committed to various CIEs (6,930 in 2015), as reflected in the table below. Table 24. Foreign nationals committed to CIEs in 2016 No. of inmates CIE Men Women Total Algeciras 2,864 237 3,101 Barcelona 639 - 639 Las Palmas 546 87 633 Madrid 1,432 94 1,526 Murcia 654 - 654 139