Template:GMM yearly city totals
GCM, GMM, MMM. First Saturday in May (or thereabouts). Cities and nations holding 4/20 events are included in the lists for later years. Yearly maps: Hundreds of cities participated in 2023 and 2022 GMM and 420. 41 nations participated on May 4, 2019, or thereabouts. 43 nations participated on May 5, 2018, or thereabouts. 42 nations participated on May 6, 2017, or thereabouts. 45 nations participated on May 7, 2016, or thereabouts. 43 nations participated on May 2, 2015, or thereabouts. 213 cities from 43 nations signed up for May 3, 2014 or thereabouts. 229 cities from 43 nations signed up for May 4, 2013 or thereabouts. 177 cities from 34 nations signed up for May 5, 2012 or thereabouts. 274 cities for May 7, 2011. 328 cities for May 1, 2010. 270 for May 2, 2009. 240 for May 3, 2008. 230 for May 5, 2007. 203 for May 6, 2006. 184 for May 7, 2005. 165 for May 1, 2004. 235 for May 3, 2003. 199 for May 4, 2002. 119 for May 5, 2001. 104 for May 6, 2000. 31 for May 1, 1999.