| SOLUTIONS | Paper – 1 | Paper – 2 |
| 2018 | Paper – 1 | Paper – 2 |
| 2017 | Paper – 1 | Paper – 2 |
| 2016 | Paper – 1 | Paper – 2 |
| 2015 | Paper – 1 | Paper – 2 |
| 2014 | Paper – 1 | Paper – 2 |
| 2013 | Paper – 1 | Paper – 2 |
| 2012 | Paper – 1 | Paper – 2 |
| 2011 | Paper – 1 | Paper – 2 |
| 2010 | Paper – 1 | Paper – 2 |
| 2009 | Paper – 1 | Paper – 2 |
| 2008 | Paper – 1 | Paper – 2 |