Item 3. Quantitative and Qualitative Disclosures About Market Risk
ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
Foreign currency exchange rate risk
We have foreign-based operations, primarily in Europe, South America and Asia, which accounted for approximately 30 percent of our net sales in the first three months of 2022. We have designated the local currency as the functional currency of our significant operations outside of the U.S. The primary currencies for which we have exchange rate exposure are the U.S. dollar versus the euro, the Japanese yen, the pound sterling, and the Chinese renminbi. In addition, certain of our domestic operations have sales to foreign customers. In the conduct of our foreign operations, we also make inter-company sales. All of this exposes us to the effect of changes in foreign currency exchange rates. Our earnings are therefore subject to change due to fluctuations in foreign currency exchange rates when the earnings in foreign currencies are translated into U.S. dollars. In some cases, to minimize the effects of such fluctuations, we use foreign exchange forward contracts to hedge firm and highly anticipated foreign currency cash flows. Our largest exposures are to the Chinese renminbi and the euro. A hypothetical 10 percent adverse change, excluding the impact of any hedging instruments, in the average Chinese renminbi and euro to U.S. dollar exchange rates during the three months ended March 31, 2022, would have decreased our net sales and income before income taxes by approximately $5.1 million or one percent, and $2.1 million or two percent, respectively. Comparatively, a hypothetical 10 percent adverse change in the average Chinese renminbi and euro to U.S. dollar exchange rates during the three months ended March 31, 2021, would have decreased our net sales and income before income taxes by approximately $4.7 million or two percent, and $1.9 million or three percent, respectively.
Interest rate risk
As of March 31, 2022, approximately $323 million of our borrowings include a variable interest rate component. As a result, we are subject to interest rate risk with respect to such floating-rate debt. A hypothetical 100 basis point increase in the variable interest rate component of our borrowings for the three months ended March 31, 2022 would have increased our annual interest expense by approximately $3.2 million or seven percent. Comparatively, a 100 basis point increase in the variable interest rate component of our borrowings for the three months ended March 31, 2021 would have increased our interest expense by approximately $3.4 million or seven percent.
As of March 31, 2022, we have entered into an interest rate swap with an aggregate notional amount of $166.2 million to manage the variability of cash flows in the interest rate payments associated with our existing LIBOR-based interest payments, effectively converting $166.2 million of our floating rate debt to a fixed rate. In accordance with the terms of the interest rate swap, we receive floating rate interest payments based upon three-month U.S. dollar LIBOR and in return are obligated to pay interest at a fixed rate of 3.79 percent until July 2023. The fair value of the interest rate swap was an asset (liability) of $(0.3) million and $(4.0) million at March 31, 2022 and December 31, 2021, respectively.
Other market risks
Information about our other remaining market risks for the period ended March 31, 2022 does not differ materially from that discussed under Part II, Item 7A. Quantitative and Qualitative Disclosures About Market Risk of our 2021 Annual Report.
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