Activities outside the U.S. accounted for approximately 94% of our total sales during 2024. Foreign currency fluctuations could result in volatility of our revenue. The results of operations and the financial position of our Japanese subsidiary are reported in Japanese yen and then translated into U.S. dollars at the applicable exchange rates for inclusion in our consolidated financial statements, exposing us to translation risk. In addition, we are exposed to transaction risk because we incur some of our sales and expenses in currencies other than the U.S. dollar. Our most significant currency exposures are to the Japanese yen, the euro, and the Swiss franc, and the exchange rates between these currencies and the U.S. dollar may fluctuate substantially. We do not actively hedge our exposure to currency rate fluctuations. Any strengthening of the U.S. dollar would likely negatively impact our results. We price some of our products in U.S. dollars, and thus changes in exchange rates can make our products more expensive in some offshore markets and reduce our sales. Inflation could also make our products more expensive and increase the credit risks to which we are exposed. Future foreign currency fluctuations could favorably or unfavorably impact and increase the volatility of our revenue, profitability, and stock price.
Economic, social, and political conditions, laws, practices, and local customs vary widely among the countries in which we sell our products. Our operations outside of the U.S. face a number of risks and potential costs, including, enjoying less stringent protection of intellectual property, and facing economic, political, and social uncertainty in some countries, especially in emerging markets. For example, sales in certain Asian and developing markets may result in lower margins and higher exposure to intellectual property infringement or counterfeits. Given the size of the Company's business in China relative to its net sales in the rest of the world, macroeconomic conditions in China have a significant impact on the Company's business, operations, and financial results. Our results in fiscal 2024 were negatively impacted by a significant decline in ICL sales in China in the fourth quarter ended December 27, 2024, where the sluggish economy and weak consumer consumption contributed to fluctuating demand for ICL procedures. If China experiences a significant or prolonged slowdown or disruption to its economy, or social or political unrest, we may experience a significant reduction in sales in the future.
Further, trade disputes or tensions between the United States and its significant trading partners may adversely affect our sales, including as a result of the imposition of tariffs or other barriers or restrictions on trade, or increase our costs. The institution of trade tariffs both globally and between the U.S. and China specifically could negatively impact the overall economic condition in our markets, including China, which could have a negative effect on our sales. As an example, on February 1, 2025, the U.S. government announced a 25% tariff on product imports from certain countries, including Mexico and Canada, and 10% tariffs on product imports from certain countries, including China. In response, China announced that they would impose counter tariffs of 10% to 15% on select goods imported from the U.S. If maintained, the newly announced tariffs and the potential escalation of trade disputes could pose a significant risk to our business and would affect our revenue and cost of goods sold. The extent, focus and duration of any such tariffs and the resulting impact on general economic conditions and on our business are uncertain and depend on various factors, such as negotiations between the U.S. and affected countries, the responses of other countries or regions, exemptions or exclusions that may be granted, availability and cost of alternative sources of supply, and demand for our products in affected markets. Further, actions we take to adapt to new tariffs or trade restrictions may cause us to modify our operations or forgo business opportunities.
In addition, new laws or regulations in China or elsewhere applicable to foreign medical device companies could negatively impact our business. Also, we are exposed to credit and collectability risk on our trade receivables with customers in certain international markets. There can be no assurance we can effectively limit our credit risk and avoid losses and our ability to transfer foreign earnings to the U.S. may be subject to taxes or restricted or result in incurring substantial costs. Our continued success as a global company depends, in part, on our ability to develop and implement policies and strategies that are effective in anticipating and managing these and other risks in the countries where we do business. These and other risks may have a material adverse effect on our operations in any particular country and on our business, financial condition and results of operations as a whole.