| Financial year | Interest rate % |
|---|---|
| 2025 | 8.77 |
| 2024 | 8.27 |
| 2023 | 4.77 |
| 2022 | 4.52 |
| 2021 | 4.52 |
| 2020 | 5.37 |
| 2019 | 5.20 |
| 2018 | 5.30 |
| 2017 | 5.40 |
| 2016 | 5.45 |
| 2015 | 5.95 |
| 2014 | 6.20 |
| 2013 | 7.05 |
| 2012 | 7.80 |
| 2011 | 7.40 |
| 2010 | 5.75 |
| 2009 | 9.45 |
| 2008 | 8.05 |
| 2007 | 7.55 |
| 2006 | 7.30 |
| 2005 | 7.05 |
| 2004 | 6.55 |
| 2003 | 6.30 |
| 2002 | 6.80 |
| 2001 | 7.80 |
| 2000 | 6.50 |
| 1999 | 6.70 |