10 Commitments and Contingent Liabilities
The Company leases office space under noncancellable operating leases. The office leases contain certain escalation clauses whereby the rental commitments may be increased if certain conditions are satisfied and specify yearly adjustments to the lease amounts based on annual adjustments to the Consumer Price Index. Rental expense under the office leases was as follows:

Additionally, the Company leases computer and other equipment under noncancellable operating leases. As of December 31, 1999, future minimum rental commitments under all noncancellable operating leases were as follows: