Here is the reason why .
It would take an average Indian 26 months to buy a software worth 6000 USD (Assuming he didnot spend any money on anything else) while it takes the average UK citizen only 2 months.
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But why Sweden ……see post here on a Swedish Website
Here is a list of countries by per capita GDP in terms of purchasing power parity
(or how much they make on an year).
http://en.wikipedia.org/wiki/List_of_countries_by_GDP_(PPP)_per_capita