\begin{tabular}{lcccccc|c}
\toprule
 & \multicolumn{2}{c}{Sorted on sale price} & \multicolumn{2}{c}{Sorted on blended proxy} & \multicolumn{2}{c|}{Sorted on assessed value} & \\
\cmidrule(lr){2-3}\cmidrule(lr){4-5}\cmidrule(lr){6-7}
Decile & Median & Aggregate & Median & Aggregate & Median & Aggregate & \makecell{IQR outliers\\(\%)} \\
\midrule
1 & +64.9 & +59.2 & +5.6 & +1.7 & -5.4 & -9.7 & 53.4 \\
2 & +7.0 & +2.9 & +2.4 & -1.7 & -2.8 & -7.2 & 16.0 \\
3 & +2.8 & -1.2 & +1.2 & -3.0 & -2.0 & -6.3 & 7.1 \\
4 & +0.9 & -3.2 & -0.0 & -4.3 & -1.3 & -5.5 & 4.4 \\
5 & -0.8 & -5.0 & -0.9 & -5.1 & -0.5 & -4.8 & 3.0 \\
6 & -2.3 & -6.4 & -1.5 & -5.7 & +0.0 & -4.1 & 2.6 \\
7 & -3.2 & -7.3 & -1.5 & -5.7 & +0.9 & -3.2 & 2.0 \\
8 & -3.8 & -7.9 & -1.0 & -5.3 & +2.0 & -2.2 & 1.7 \\
9 & -3.8 & -7.9 & -0.6 & -4.8 & +3.2 & -0.9 & 1.6 \\
10 & -4.7 & -8.8 & -0.2 & -4.5 & +5.7 & +1.5 & 1.8 \\
\bottomrule
\end{tabular}