Notes to Financial Statements
4. Contributions Receivable
Contributions receivable at December 31, 2006 and 2005 include approximately $12.4 million and $11.0 million, respectively, representing the present value of the estimated future benefit to be received as a beneficiary in a charitable remainder trust. The interest rates used to discount the trust receivable to present value range from 4.5 percent to 6.5 percent at December 31, 2006 and 2005, respectively.