| Year | Class 1A |
Class 2A |
Class 3A |
Class 4A |
Class 5A |
Class 6A |
Class 7A |
Class 8A |
|---|---|---|---|---|---|---|---|---|
| 2005 | up to 304 | 305-404 | 405-547 | 548-891 | 892-1310 | 1311-1915 | 1916-2478 | 2479-above |
| 2006 | up to 336 | 337-455 | 456-624 | 625-996 | 997-1461 | 1462-2016 | 2017-2596 | 2597-above |
| 2007 | up to 305 | 306-450 | 451-573 | 574-883 | 884-1326 | 1327-1870 | 1871-2505 | 2506-above |
| 2008 | up to 316 | 317-438 | 439-599 | 600-918 | 919-1339 | 1340-1877 | 1878-2514 | 2515-above |
| 2009 | up to 314 | 318-438 | 441-612.15 | 613-1013 | 1059.30-1453 | 1473-1965 | 1926-2544.30 | 2582-5997.75 |


