Figure 3 shows the percent overwinter mortality reported by beekeepers in both Ontario and Canada from 2007 to present. The reported overwinter mortality in Ontario and Canada (respectively) was the following: 2007 - 37% and 29%; 2008 - 33% and 35%; 2009 - 31% and 34%; 2010 - 22% and 21%; 2011 - 43% and 29%; 2012 - 12% and 15%; 2013 - 38% and 29%; 2014 - 58% and 25%; 2015 - 38% and 16%; 2016 - 18% and 17%; 2017 - 27% and XX%. The national overwinter mortality is not yet available for 2017.

2017 Ontario Apiculture Winter Loss Survey