Capital expenditures totaled $58.5 million in the first nine months of 2018, compared with $66.4 million in the year ago period. We project 2018 capital expenditures will be approximately $85 million and full year depreciation and amortization will be approximately $75 million.
We have a $500 million multi-currency credit facility with a group of nine banks, which expires in December 2021. The facility has an accordion provision, which allows us to increase it up to $700 million if certain conditions (including lender approval) are satisfied. Borrowing rates under the facility are determined by our leverage ratio. The facility requires us to maintain two financial covenants, a leverage ratio test and an interest coverage test, and we were in compliance with the covenants as of September 30, 2018.
The facility backs up commercial paper and credit line borrowings. As a result of the long-term nature of this facility, our commercial paper and credit line borrowings, as well as drawings under the facility, are classified as long-term debt. At September 30, 2018, we had available borrowing capacity of $426.0 million under this facility. We believe the combination of available borrowing capacity and operating cash flows will provide sufficient funds to finance our existing operations for the foreseeable future.
Our total debt declined $217.1 million from $410.4 million at December 31, 2017 to $193.3 million at September 30, 2018. Nearly $300 million of cash repatriated to the U.S. was used to pay down floating rate debt, as well as, to fund our share repurchase activity and dividend payments. Our leverage, as measured by the ratio of total debt to total capitalization, was 9.9 percent at the end of the third quarter in 2018, compared with 20 percent at the end of last year.
Our pension plan continues to meet all funding requirements under ERISA regulations. We are not required to make a contribution and we do not plan to make any voluntary contributions to the plan in 2018.
In July 2018, our Board of Directors approved adding 2.5 million shares of common stock to an existing discretionary share repurchase authority. Under the share repurchase program, our common stock may be purchased through a combination of a Rule10b5-1 automatic trading plan and discretionary purchases in accordance with applicable securities laws. The stock repurchase authorization remains effective until terminated by our Board of Directors, which may occur at any time, subject to the parameters of any Rule10b5-1 automatic trading plan that we may then have in effect. During the first nine months of 2018, we repurchased 1.7 million shares of our stock at a total cost of $106.0 million. At September 30, 2018, we had approximately 3.2 million shares remaining on the board share repurchase authority. Depending on factors such as stock price, working capital requirements and alternative investment opportunities, we expect to spend approximately $135 million on stock repurchases through our Rule10b5-1 automatic trading plan in 2018. In addition, we plan to opportunistically buy up to $65 million of shares in the open market.
On October 9, 2018, our Board of Directors increased the rate of our quarterly cash dividend to $0.22 per share on our Common Stock and Class A common stock, representing an increase of 22 percent. As a result of our strong cash flows and our expectation that they will continue, we increased our dividend two times in 2018. The five-year compound annual growth rate of our dividend is approximately 30 percent. The dividend is payable on November 15, 2018 to shareholders of record on October 31, 2018.
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