\begin{tabular}{|c|p{3.5cm}||r|r|r||r|}\hline
number & \multicolumn{1}{c||}{title} & \multicolumn{3}{c||}{years } & total \\\cline{3-5}
 & & \multicolumn{1}{c|}{1} & \multicolumn{1}{c|}{2} & \multicolumn{1}{c||}{3} &  \\\hline\hline
D230 & \resstablestyletitle{Specification of {\tt xcoach} format} & 7.0 & 3.0 & 0.0 & 10.0 \\\hline
 & total Task-2 & 7.0 & 3.0 & 0.0 & 10.0 \\\hline
\hline D430 & \resstablestyletitle{Process generation method} & 5.0 & 0.0 & 5.0 & 10.0 \\\hline
D431 & \resstablestyletitle{Process and FIFO construction} & 20.0 & 20.0 & 20.0 & 60.0 \\\hline
 & total Task-4 & 25.0 & 20.0 & 25.0 & 70.0\\\hline
\hline
 & total & 32.0 & 23.0 & 25.0 & 80.0 \\\hline
\end{tabular}
