How Long, to the Nearest Year, Will It Take an Investment

Short Answer

How long, to the nearest year, will it take an investment in Canada to double its value if the interest is compounded every six months Please round the answer to the nearest year. $$\begin{array} { | l | l | l | l | l | l | } \hline \text { Country } & \text { U.S. } & \text { Japan } & \text { Canada } & \text { Korea } & \text { Australia } \\\hline \text { Yield } & 5.3 \% & 1.5 \% & 5.2 \% & 5.4 \% & 6.0 \% \\\hline\end{array}$$
t = __________ year(s)