Incomes of over Nu 100,000 per annum are taxed, but as Bhutan is currently one of the world's least developed countries, very few wage and salary earners qualify. Bhutan's inflation rate was estimated at about three percent in 2003. Bhutan has a gross domestic product of around US$5.855 billion (adjusted to purchasing power parity), making it the 158th-largest economy in the world. Per capita income (PPP) is around $7,641, ranked 144th. Government revenues total $407.1 million, though expenditures amount to $614 million. Twenty-five percent of the budget expenditure, however, is financed by India's Ministry of External Affairs.