Notwithstanding some increases in seizures of cannabis resin, the amount of cannabis seized declined slightly over the period 2010-2015 as whole, although they showed an upward trend from 2012. The remaining 96 per cent is stored on the “deep web”. A part of it, the darknet, contains information that is intentionally hidden and only accessible using special web browsers.130 The darknet is used for all kinds of activities, illicit included, particularly drug trafficking. In 2014, the question was asked specifically in relation to the Silk Road, the then dominant darknet market, as the survey was conducted just after the Silk Road's closure, from 2015, the question was asked in relation to all darknet markets. Sources: Global Drug Survey 2017 findings (www.globaldrug-survey.com), and Global Drug Survey 2017, detailed findings on drug cryptomarkets.