This chart series records the yields on NZ Government bonds, as published by the RBNZ. Specific bond selection is by the RBNZ.

All government bonds are denominated in New Zealand dollars and have a fixed interest coupon paid semi-annually in arrears. The bonds are redeemable at par on maturity. The benchmark bonds used to report the yields for each maturity are listed here >> http://www.rbnz.govt.nz/statistics/exandint/b2/3651606.html

Note that the one year bond yields were discontinued due to the lack of a suitable issue as at May 1, 2009. It starts up again as at 2 August 2010 when new valid data became available again.