The Corruption Perceptions Index 2013 has been released that it scores 177 countries and territories from 0 (highly corrupt) to 100 (very clean). An interactive heat map with popup boxes has been created:
According to the map, Denmark and New Zealand ranks 1st while Afghanistan, North Korea & Somalia ranks least in the ranking. The U.S. is the 19th least corrupt country, and 2/3 countries score below 50 that indicates how serious and wide spread the corruption is in our current society. Map users can hover the country region to see the ranking, this year and previous year’s scores in the the info boxes.
Map Reviews: 4/5 Stars
Clear heat map with popup infobox, map legend, and pleasant map color settings. Though there is still a minor suggestion for the map if option for enabling countries’ abbreviations is provided since not all the map users can immediately recognized specific country without labels.
Here is another image map for visualizing the data by different circles which darker red refers to higher corruption level. This chart has already categorized countries to different groups by the scores, and larger the circles size means more countries in that score level.