have a negative effect on our growth and profitability in the future. net revenue comprised 55 percent of our total net revenue. We expect international sales to continue to account for a significant portion of our total net revenue. Such sales may be subject to unexpected regulatory requirements, tariffs and other barriers. Additionally, foreign sales are primarily made in local currencies, which may fluctuate against the U.S. dollar. In addition, our foreign investments and our cash and cash equivalents denominated in foreign currencies are subject to currency fluctuations. We use foreign currency forward contracts to mitigate some foreign currency risk associated with foreign currency denominated monetary assets and liabilities (primarily certain intercompany receivables and payables) to a limited extent and foreign currency option contracts to hedge foreign currency forecasted transactions (primarily related to a portion of the revenue and expenses denominated in foreign currency generated by our operational subsidiaries). However, these activities are limited in the protection they provide us from foreign currency fluctuations and can themselves result in losses. In the past, the disruption in the global financial markets has impacted many of the financial institutions with which we do business, and we are subject to counterparty risk with respect to such institutions with whom we enter into hedging transactions. A sustained decline in the financial stability of financial institutions as a result of the disruption in the financial markets could negatively impact our treasury operations, including our ability to secure credit-worthy counterparties for our foreign currency hedging programs. Accordingly, our results of operations, including our reported net revenue, operating expenses and net income, and financial condition can be adversely affected by unfavorable foreign currency fluctuations, especially the Euro, British pound sterling and Canadian dollar. condition. (the "Notes"), resulting in debt service obligations on the Notes of approximately $5 million per year. In addition, in August 2012, we entered into an unsecured committed $500 million revolving credit facility. While the facility is currently undrawn, we may use the proceeds of any future borrowings for general corporate purposes. The credit facility contains affirmative, negative and financial covenants, including a maximum capitalization ratio and minimum liquidity requirements. cash and investments. We may enter into other financial instruments in the future. principal of, and interest on, our indebtedness, thereby reducing the availability of such cash flow to fund our growth strategy, working capital, capital expenditures and other general corporate purposes; time we are required to make purchases of the Notes or convert the Notes. In addition, we may be required to use funds that are domiciled in foreign tax jurisdictions in order to make the cash payments upon any purchase or conversion of the Notes. If we were to choose to use such funds, we would be required to accrue and pay |