+f, Westshore Terminals Lid. Notes to Financial Statements December 31, 2002 and 2001 (Figures in tables are expressed in thousands of dollars) was decreased to 3.5% after 10 years and remained at that level thereafter. The Company’s net benefit plan expense (income) for the year ended December 31, 2002 is as follows: The Company’s terminal site is leased (the Lease) from the Vancouver Port Authority (the VPA). Charges payable by the Company under the Lease comprise an annual base land and waterlot rental fee and an annual participation rental based on the volume of coal shipped. A minimum participation rental per tonne is charged based on a minimum annual tonnage (MAT) of 17.6 million tonnes. A higher participation rental per tonne is charged on tonnage in excess of the MAT. The original term of the Lease expired on February 28, 2002. The Company exercised the first of two options to renew the Lease for an additional 10-year period, commencing March 1, 2002. The VPA did not increase the land and waterlot rental rates and tonnage rates upon renewal. The VPA has the right to change the lease rates every three years during the renewal period. The Company has the right to seek redetermination of any increased rental by invoking an arbitration process. Future minimum operating lease payments for the next five years ending December 31 (assuming the VPA does not exercise its right to adjust the rate in 2005) are as follows: Approximately 61% (2001 - 66%), 28% (2001 - 21%) and 11% (2001 - 13%) of the Company’s revenue is earned from its three largest customers, respectively. All of these customers operate within the coal mining industry in Western Canada. The total amount receivable from these customers was $10,318,000 at December 31, 2002 (2001 - $8,351,000). Two of the Company’s customer contracts, including the contract with its largest customer, were renegotiated in 2002. Between 1998 and 2002, the Company had been involved in a dispute with a customer regarding the coal handling rates the Company charged. In April 2002, the two parties reached a settlement. The Company had accrued for this potential liability prior to the settlement. The Company is committed under operating leases to the rental of property, facilities, and equipment. In January 2000, the Company commenced legal proceedings against the VPA in Federal Court seeking to reduce its rental charges payable to the VPA under the Lease. During 2002, both trial level court and the court of appeal ruled against the Company. The Company has determined not to appeal this matter. Terminal lease Other Total $ $ $ 2003 11,666 129 11,795 2004 11,666 129 11,795 2005 11,666 129 11,795 2006 11,666 - 11,666 2007 11,666 - 11,666 ‘Thereafter 48,608 - 48,608 Pension plan Other benefits benefits 2002 2001 2002 2001 $ $ $ $ Current service cost 687 711 421 400 Interest cost 2,888 2,792 1,053 952 Expected return on plan assets (3,817) (3,703) - - Amortization of experience losses 27 30 211 159 Amortization of past service costs 186 186 212 212 t benefi i Net benefit plan (income) (29) 16 1,897 1.723 expense 9. Significant customers and contracts Contract arbitration 10. Commitments and contingencies (a) Commitments Lease rate legal proceedings (b) Contingencies 24