\begin{table}[!htb]
\caption{\textsc{Asymmetric Effects of Monetary Policy and Business Cycle}}
\label{tab:example}
\centering
\setstretch{1.1}
\footnotesize
\begin{threeparttable}
\begin{tabularx}{0.98\linewidth}{|l|YYYYYYYY}
\hline 
 & \beta^{+}_{Baseline} & \beta^{+} &  \gamma^{+,+}    &  \gamma^{+,-} &  \beta^{-}_{Baseline}   &  \beta^{-} &  \gamma^{-,+}    &  \gamma^{-,-} \\ 
 lnRealSales & -2.09**  & -2.28** & 4.64* & 1.01 & 1.02 & 1.19 & 0.12 & -0.17 \\
\hline 
   &  (0.96) &  (1.04) & (2.77) & (4.58) & (0.75) & (0.95 ) & (5.99)  & (2.37) \\
\hline 
\end{tabularx}
\hline 
\end{threeparttable}
\end{table}