Fig. 9From: Modeling the structure and dynamics of transnational illicit networks: an application to cigarette traffickingBetweenness centrality values (main nodes), 2008–2017. Note: the graph reports nodes that ranked among the top 10 in the average betweenness centrality over the period 2008–2017. To account for the different size of the networks over time, the measure is normalized by dividing the unscaled betweenness centrality of every node by a scaling factor, which is the maximum possible value of the measure in every yearBack to article page