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The Defense Department , which has received over 90 percent of the $ 437 billion , has stiffed Congress for two years on a requirement that Congress voted into law to demand regular reporting on how they are spending the money . The market research firm IMS Health reported that 1.3 million of the $ 20 Preven kits were sold during the three months that Preven was available for sale in 1998 . Spending on services - which range from outsourcing an agency 's entire IT operation to consulting or the development of software - accounted for more than 90 percent of the $ 60 billion in total federal IT spending , according to the study , which was compiled by research firm INPUT of Chantilly , Va. Of the $ 7,961 annual expenditure on transportation in Chicago , 91.8 percent was spent buying and maintaining private vehicles .