Explaining Unusual Cash Patterns in 2018 Staff Analytical Note 2019-22 Walter Engert, Ben Fung, Jozsef Molnar, Gradon Nicholls There was an unusually large decline of bank notes in circulation in October 2018. Some have argued that this was due to the legalization of cannabis in Canada in mid-October. Content Type(s): Staff research, Staff analytical notes Topic(s): Bank notes, Digital currencies and fintech, Financial services JEL Code(s): E, E4, E41, E42, E5, E58