Disposable household and per capita income

Columns: Rank | Country | NCU | Currency in 2004 | PPP rate 2004 | Mean Income ( PPP )
10 | Sweden | 203,460 | Swedish Krona | 9.6 | 21,193 | 11 | Belgium | 19,563 | Euro | 0.924 | 21,173 | 12 | South Korea | 18,587,000 | Won | 886.2 | 20,937 | 13 | France | 19,547 | Euro | 0.952 | 20,532 | 14 | Australia | 29,417 | Australian Dollar | 1.44 | 20,428 | 15 | Japan | 2,986,594 | Yen | 150.8 | 19,805 | 16 | Spain | 14,003 | Euro | 0.788 | 17,770 | 17 | Italy | 15,835 | Euro | 0.91 | 17,401 | 18 | Poland | 14,844 | Polish złoty | 2.08 | 7,136

Example questions:
What is the capital of the country with the highest disposable income per capita in the Luxembourg Income Study of Disposable household and per capita income ? | What is the capital of the country with the fourth highest disposable income per capita in the Luxembourg Income Study of Disposable household and per capita income ? | What is the capital of the country with the sixth highest disposable income per capita in the Luxembourg Income Study of Disposable household and per capita income ? | What is the capital of the country with the second highest disposable income per capita in the Luxembourg Income Study of Disposable household and per capita income ?

Answers:
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