All the while balancing the books?
Harper added more debt than than any other other government in Canadian
 history-while oil was at an all time high:

Deficits during the Harper years:

2007 (2.4) 
2008 (5.8) 
2009 (55.6) 
2010 (33.3) 
2011 (26.2) 
2012 (25.9) 
2013 (18.9) 
2014 (16.6) 
2015 (2.1)