Here is an article entitled Total revenue received from all sources outside Canada by Canadian Registered Charities in 2015 which lists the Canadian charities that received the largest contributions from outside of Canada.  

The charity world is increasingly international in scope. Although we often focus on how Canadian charities conduct foreign activities abroad, there is another important story. In 2010, Canadian charities received approximately $831 million from sources outside of Canada.  Based on 2015 T3010 data, this number has increased to approximately $1,908,965,463.00.

Therefore, over $1.9 billion was received by Canadian registered charities from outside of Canada in their 2015 fiscal year.