As I recall, you were looking for the last $50 billion of the $200 billion. An extraordinary liquidity provision by the Bank of Canada accounts for $40 billion of this. The $40 billion is a round number; this peaked at $41 billion in the fall and currently stands in the $30 billion range. The additional $10 billion is through the new 10-year Canada mortgage bond.
On March 3rd, 2009. See this statement in context.