Item 3. Quantitative and Qualitative Disclosures About Market Risk
Item 3. Quantitative and Qualitative Disclosures About Market Risk
We are subject to price risk for our raw materials, the most significant of which relates to the cost of polypropylene and nitrile used in the manufacturing processes of our Global Products segment. Prices of the commodities underlying these raw materials are volatile and have fluctuated significantly in recent years and in the future may contribute to fluctuations in our results of operations. The ability to hedge these commodity prices is limited.
In the normal course of business, we are exposed to foreign currency translation and transaction risks. Our business transactions outside of the United States are denominated in the euro, Malaysian ringgit, Mexican peso, Thai baht and other currencies. We may use foreign currency forwards, swaps and options, where possible, to manage our risk related to certain foreign currency fluctuations.
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We are exposed to market risk from changes in interest rates related to our borrowing under our Credit Agreement and Receivables Securitization Program. We had $33.3 million in borrowings under our revolving credit facility, $226 million in borrowings under our Receivables Securitization Program and $11.4 million in letters of credit under the Credit Agreement at June 30, 2021. We estimate an increase in interest rates of 100 basis points would result in a potential reduction in future pre-tax earnings of approximately $2.7 million per year based on our borrowings outstanding at June 30, 2021.
Due to the nature and pricing of our Global Solutions segment distribution services, we are exposed to potential volatility in fuel prices. Our strategies for helping to mitigate our exposure to changing domestic fuel prices have included using trucks with improved fuel efficiency. We benchmark our domestic diesel fuel purchase prices against the U.S. Weekly Retail On-Highway Diesel Prices (benchmark) as quoted by the U.S. Energy Information Administration. The benchmark averaged $3.06 and $2.66 per gallon in the first six months of 2021 and 2020. Based on our fuel consumption in the first six months of 2021, we estimate that every 10 cents per gallon increase in the benchmark would reduce our Global Solutions segment operating income by approximately $0.2 million on an annualized basis.
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