How have the 15 Worst Countries for Slum Population changed since 2000?

Goal 7: Ensure Environmental Sustainability 

• What do you think, how does this data correlate, or does it to the unemployment rate of the 2 outliers India and China? 
• The two outliers China and India sit right next to each other on the map, still they went the opposite ways on the map. One became worse, one improved, why do you think this happened?