3.3 Categories of institutions visited A total of 1,102 visits have been conducted since 2008. They are distributed as follows: - 37.11% concerned police custody facilities; - 21.51% concerned penal institutions; - 15.61% concerned health institutions; - 8.53% concerned detention centres and facilities for illegal immigrants and waiting zones; - 6.99% concerned court jails and cells; - 5.81% concerned juvenile detention centres; - 3.72% concerned customs detention facilities; - 0.63% concerned deportation measures; - 0.09% concerned other places. 0,63% 0,09% police custody facilities 3,72% 5,81% penal institutions health institutions 6,99% 37,11% administrative detention areas, facilities or centres court jails or cells 8,53% juvenile detention centres customs detention facilities 15,61% deportation measures other places 21,51% This distribution does not change much from one year to the next because anteriority plays an important role here. 3.4 Follow-up visits in 2015 Follow-up visits were conducted in the following institutions, which had already been visited previously (the year of the first visit is indicated in brackets): - prison of Poitiers-Vivonne (2012); - prison of Béziers (2011); - prison of Château-Thierry (2009); - prison of Nancy-Maxéville (2010); 103