I made a table in my thesis with this code:
\begin{table}[htbp]
\centering
\caption{Add caption}
\begin{tabularx}{\hsize}{cc}
\toprule
& Folhosas \\
\midrule
Celulose & 5 \\
Hemicelulose & 2 \\
Extrac & 6 \\
Lenhinha & 9 \\
\bottomrule
\end{tabularx}
\label{tab:addlabel}
\end{table}
But, I want the text in the middle of table. Can you help me?