Can you help me find the forward premium?

\begin{tabular}{lcc} Period & \begin{tabular}{c} US\$/ \\ Bid Rate \end{tabular} & \begin{tabular}{c} US\$/ \\ Ask Rate \end{tabular} \\ \hline spot & 1.1567 & 1.1549 \\ 1 month & 1.1595 & 1.1581 \\ 2 months & 1.1643 & 1.1628 \\ 3 months & 1.1687 & 1.1659 \\ 6 months & 1.1752 & 1.1728 \\ 12 months & 1.1827 & 1.1803 \\ 24 months & 1.2103 & 1.2095 \\ \hline \end{tabular}