Global Risks Report, 2012

2012-2020 method: Global Risks Perception Survey of the Forum's multistakeholder community; each global risk rated for likelihood and impact over a 10-year horizon on a numeric scale (1 to 5 confirmed in the 2012 and 2020 reports; not checked for other years). The size of the risk set changed: 50 risks in 2012, 31 in 2014, 30 in 2020. The risk list and definitions changed between years (for example cyberattacks, income disparity and unemployment entered in 2012). Label and category as printed in Table 1.3 'The Evolving Global Risks Landscape (2007-2014)' of Global Risks 2014 (p. 17), the earliest retrospective WEF table found; wording in the edition's own report not checked. The Global Risks Report 2020 Figure I reprints the same ranks with shortened and sometimes changed labels and colours, kept as label_grr2020_figure and category_grr2020_figure. Category read from the colour key. Top 5 per ranking only; the edition's own report may rank more risks. Source oddity: the two retrospective WEF figures disagree on categories. GRR 2014 Table 1.3 colours income disparity societal in 2012-2013 and water supply crises societal (2012) and environmental (2013 likelihood); GRR 2020 Figure I colours income disparity economic and water crises societal. The 2014 table footnote says water supply crises were reclassified as environmental in 2014; the 2020 figure footnote says water crises became societal in 2015. Checked against the 2012 report's own Figures 4 and 5 ('Top 5 in terms of likelihood/impact'): same ranks and the same labels as GRR 2014 Table 1.3; mean scores added from that figure. Likelihood #1 and #2 tie at 4.03 in the 2012 report. The 2012 report says its set of 50 risks replaced 37 in earlier years, so comparisons with 2011 are 'not one-to-one'.