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Our carrying value of investments in unconsolidated joint ventures differs from our share of the assets reported in the “Summary Balance Sheets – Unconsolidated Joint Ventures” shown below due to the cost of our investment in excess of the historical net book values of the unconsolidated joint ventures and other adjustments to the book basis, including intercompany profits on sales of services that are capitalized by the unconsolidated joint ventures. The differences in basis are amortized over the various useful lives of the related assets. 

Summary unaudited financial information of joint ventures accounted for using the equity method as of December 31, 2003 and 2002 is as follows (in thousands): 

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