Standard & Poor's findings were based on fiscal year 2006 data for issues with full reporting information, representing 53.7% of the S&P 500's market value. Standard & Poor's also calculated that an additional 0.95% of sales was generated from U.S. produced goods and services that were exported abroad, down from the 1.14% reported in 2005.
While globalization is apparent in almost all company reports, exact sales and export levels are difficult to obtain. Many companies tend to categorize sales by regions or markets, while others segregate out government sales. Additionally, intra-company sales, and hence profits, are sometimes structured to take advantage of trade and tax polices. "Despite the lack of full reporting information, the growing significance of international sales and profits among U.S. domiciled companies should not be overlooked as more U.S. companies are positioning themselves, via greater production abroad, to take advantage of the growth in the foreign middle class," concludes Silverblatt.