Q:Given the following passage  "Countries in the top quartile of HDI ("very high human development" group) with a missing IHDI: New Zealand, Singapore, Hong Kong, Liechtenstein, Brunei, Qatar, Saudi Arabia, Andorra, United Arab Emirates, Bahrain, Cuba, and Kuwait.",  answer the following question. Note that the answer is present within the text.  Question: HDI group consist of what?
A:
Countries