0,47% Natured'établissement of the institution concerned Nature concerné 0,95% 0,36% 2,64% 0,18% 0,03% Penal institution Etablissement pénitentiaire Healthcare institution Etablissement de santé 9,95% Administrative detention Rétention administrative Police facilities Locauxcustody de garde à vue Autres Other Unspecified Indéterminé 85,42% Juvenile detention centre Centre éducatif fermé Court Dépôtcells de tribunaux Statistics drawn up on the basis of the letters received as a whole 21 Category of place concerned 2011 2012 2013 2014 2015 2016 Penal institution 94.15% 93.11% 90.59% 90.28% 88.91% 85.42% Healthcare institution 3.48% 4.24% 5.88% 6.40% 6.75% 9.95% Administrative detention 0.71% 1.10% 1.18% 1.21% 2.33% 2.64% Custody facilities 0.29% 0.74% 0.61% 0.80% 0.83% 0.95% Other 0.79% 0.12% 1.16% 0.70% 0.26% 0.47% Unspecified 0.42% 0.47% 0.42% 0.39% 0.54% 0.36% Juvenile detention centre 0.05% 0.15% 0.12% 0.19% 0.31% 0.18% Cells 0.11% 0.07% 0.04% 0.03% 0.07% 0.03% Total 100% 100% 100% 100% 100% 100% In 2016, the increase 22 in referrals concerning health institutions was significant; such referrals now account for almost 10% of all cases referred. It is due to a surge in case referrals from the persons concerned (207 letters received versus 158 in 2015 over the same period, i .e. a 31.01% increase) as well as from medical staff (15 letters versus 5 in 2015, i.e. a 200% increase). As indicated above, this rise is particularly the result of numerous reports received following the publication of recommendations concerning the Ain psychotherapy centre in Bourg-en-Bresse in the Journal officiel of 16 March 2016, on urgent grounds, as well as the publication of the CGLPL's first thematic report entitled "Solitary confinement and restraint in mental health institutions". Referrals concerning detention centres for illegal immigrants have also continued to climb, albeit at a slower pace. A number of cases were referred by associations (66 letters received versus 46 in 2015, i.e. a 43.48% increase). 21 This table does not present the statistics drawn up in 2009 and 2010, which were based on the 1st referral letter and not on all of the letters received. 22 335 letters received versus 247 in 2015 over the same period, i.e. a 35.63% increase 100