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Rich content was second most requested in a 2015 reader survey[1]
Based on {{Global Heat Maps by Year}}
Data sets from OWID
Obesity data[2]

Steps

Download csv (put in google docs and trim to three columns)
Upload it at https://www.csvjson.com/csv2json
- Select "parse numbers"
Copy the output and paste it into Notepad
Find and replace { with [, and "Country:" with nothing
Paste this data below the heading data at [Data:Child Mortality.tab]