9. Short-Term Borrowings and Long-Term Debt Short-term borrowings at March 31, 2003 and 2004 consisted of the following: Assets pledged as collateral for short-term borrowings and long-term debt at March 31, 2003 and 2004 are principally presented below: Yen U.S. Dollars (millions) (thousands) 2003 2004 2004 Loans, principally from banks and insurance companies,  due 2003 to 2020 with the weighted average interest rate of 1.63% at March 31, 2003 and due 2004 to 2020 with the weighted average interest rate of 2.12% at March 31, 2004: Secured · 6,325 · 3,233 $ 30,500 Unsecured 483,684 220,104 2,076,453 Bonds and notes issued by the Company: 1.4% unsecured convertible bonds due 2004 39,617 39,617 373,745 2.0% unsecured convertible bonds due 2004 15,577 — — zero coupon unsecured convertible bonds due 2009 250,000 250,000 2,358,492 3.225% unsecured bonds due 2003 30,000 — — 2.425% unsecured bonds due 2003 50,000 — — 2.875% unsecured bonds due 2006 50,000 50,000 471,698 2.575% unsecured bonds due 2004 50,000 50,000 471,698 3.15% unsecured bonds due 2009 50,000 50,000 471,698 2.3% unsecured bonds due 2007 50,000 50,000 471,698 2.325% unsecured bonds due 2008 50,000 50,000 471,698 3.0% unsecured bonds due 2018 30,000 30,000 283,019 2.175% unsecured bonds due 2008 50,000 50,000 471,698 2.15% unsecured bonds due 2008 50,000 50,000 471,698 0.64% unsecured bonds due 2006 100,000 100,000 943,396 0.31% unsecured bonds due 2004 80,000 80,000 754,717 Bonds and notes issued by consolidated subsidiaries: due 2003 to 2006 with the weighted average interest rate of 1.34% at March 31, 2003 and due 2005 to 2006 with the weighted average interest rate of 1.38% at March 31, 2004: Unsecured 25,900 25,785 243,255 Less amounts due within one year (203,425) (204,367) (1,927,991) ·1,257,678 ·894,372 $8,437,472 Yen U.S. Dollars (millions) (thousands) 2003 2004 2004 Property, plant and equipment, net ·17,909 ·6,268 $59,132 45 Long-term debt at March 31, 2003 and 2004 consisted of the following: Yen U.S. Dollars (millions) (thousands) 2003 2004 2004 Loans, principally from banks, with weighted average interest rates of 1.11% at March 31, 2003 and 0.99% at March 31, 2004: Secured · 2,945 · 833 $ 7,858 Unsecured 295,721 177,549 1,674,991 Commercial paper, with the weighted average interest rate  of 0.10% at March 31, 2003: Unsecured 4,000 — — ·302,666 ·178,382 $1,682,849