The proceeds from sales of available-for-sale securities for the years ended March 31, 2002 and 2001 were ¥29,714 million ($223,414 thousand) and ¥23,774 million, respectively. The gross realized gains on those sales for the years ended March 31, 2002 and 2001 were ¥9,474 million ($71,233 thousand) and ¥5,443 million, respectively. The gross realized losses on those sales for the years ended March 31, 2002 and 2001 were ¥644 million ($4,842 thou- sand) and ¥1,992 million, respectively.  The Company recorded a charge of ¥27,572 million ($207,308 thousand) related to other-than-temporary declines in the marketable and non-marketable equity securities for the year ended March 31, 2002, which is includ- ed in other expenses. Investment in financing leases consists of sales-type and direct financing leases mainly for information systems, med- ical equipment, industrial equipment and others. Other finance receivables represent transactions in a variety of forms, including commercial loans, and installment sales of consumer products manufactured by the Company. Finance receivables comprise the following: At March 31, 2002, the contractual maturities of minimum lease payments of the investment in financing leases and the other finance receivables are as follows: Thousands of Millions of yen U.S. dollars March 31 2002 2001 2002 Investment in financing leases: Total minimum lease payments receivable ¥ 286,019 ¥ 321,444 $ 2,150,519 Estimated executory costs (10,471) (12,579) (78,729) Unearned income (11,771) (15,576) (88,504) Estimated residual values 2,417 3,725 18,173 266,194 297,014 2,001,459 Less—allowance for doubtful accounts (1,161) (1,339)  (8,729) 265,033 295,675 1,992,730 Less—current portion (81,464) (97,475) (612,512) ¥ 183,569 ¥ 198,200 $ 1,380,218 Other finance receivables ¥ 250,223 ¥ 278,658 $ 1,881,376 Less—allowance for doubtful accounts (11,286)  (9,865)  (84,857) 238,937 268,793  1,796,519 Less—current portion (109,448) (125,501) (822,917) ¥ 129,489 ¥ 143,292 $ 973,602 Investment in financing leases Other finance receivables Thousands of Thousands of Year ending March 31 Millions of yen U.S. dollars Millions of yen U.S. dollars 2003 ¥ 88,504 $ 665,444 ¥116,045 $ 872,519 2004 78,585 590,865 47,290 355,564 2005 58,220 437,744 27,115 203,872 2006 37,620 282,857 17,323 130,248 2007 18,047 135,692 10,127 76,143 Thereafter 5,043 37,917 32,323 243,030 ¥286,019 $2,150,519 ¥250,223 $1,881,376 51 5.  FINANCE RECEIVABLES AND SECURITIZATIONS