71.   Political uncertainty is also boosting bonds, traders said.

72.   Record low Japanese interest rates have boosted bonds by making it cheaper for investors to fund bond purchases.

73.   Record-low interest rates have boosted bonds by making it cheaper to fund bond purchases.

74.   Record-low Japanese interest rates have boosted bonds by making it cheaper to fund bond purchases.

75.   Record-low rates have boosted bonds by making it cheaper for investors to fund bond purchases.

76.   Record-low interest rates have boosted bonds by making it cheaper for investors to fund their bond purchases.

77.   Rising U.S. Treasuries, the benchmark for global debt, boost Japanese bonds as well.

78.   Record low interest rates have boosted Japanese bonds by making it cheaper for investors to fund bond purchases.

79.   Record-low domestic interest rates have boosted bonds by making it cheaper for investors to fund their bond purchases.

80.   Record-low Japanese rates have boosted bonds by making it cheaper for investors to fund their bond purchases.