- 2019 - Number Theory
- 2018 - Number Theory
- 2017 - Number Theory
- 2016 - Number Theory
- 2015 - Number Theory
- 2014 - Number Theory
- 2013 - Number Theory
- 2012 - Number Theory
- 2011 - Number Theory
- 2010 - Number Theory
- 2009 - Number Theory
- 2008 - Number Theory
- 2007 - Number Theory
- 2006 - Number Theory
- 2005 - Number Theory
- 2003 - Number Theory
