Photo taken on April 30, 2013 shows the newly unveiled polymer note serie at the Bank of Canada in Ottawa, Canada. Canada' s central bank on Tuesday added the last two banknotes to its polymer note series, which started in 2011 in its latest efforts to fight against counterfeit currency. (Xinhua/James Park) 

(L-R) Canadian Space Agency astronaut David Saint-Jacques, Canada's Finance Minister Jim Flaherty, Bank of Canada Governor Mark Carney and Chair of the board at VIA Rail Canada Paul G. Smith hold the newly unveiled 5-dollar and 10-dollar polymer bank notes at the Bank of Canada in Ottawa, Canada, April 30, 2013. Canada' s central bank on Tuesday added the last two banknotes to its polymer note series, which started in 2011 in its latest efforts to fight against counterfeit currency. (Xinhua/James Park)

Photo taken on April 30, 2013 shows the newly unveiled 5-dollar and 10-dollar polymer bank notes at the Bank of Canada in Ottawa, Canada. Canada' s central bank on Tuesday added the last two banknotes to its polymer note series, which started in 2011 in its latest efforts to fight against counterfeit currency. (Xinhua/James Park)

Canadian Space Agency astronaut Chris Hadfield, the commander of the International Space Station (ISS), holds the newly unveiled 5-dollar polymer bank note via video conference call from the space station orbiting more than 350 kilometres above earth for the unveiling event taking place at the Bank of Canada in Ottawa, Canada, April 30, 2013. Canada' s central bank on Tuesday added the last two banknotes to its polymer note series, which started in 2011 in its latest efforts to fight against counterfeit currency. (Xinhua/James Park)