I know this comment probably will not be seen by many but I will write it anyway.
this data doesn't mean anything, why? imagine if you build a whole country, roads, schools, hospitals and so on; and then you put just 10 people to live that country. the Co2 per capita will be so high, if 10,000 lived in the same country the Co2 per capita will be so low. and that what is happening here.
So what is this data mean? it means that Qatar is a developed country with small population which is true.
Co2 per capita is not useful in very small nation and also in very large nation