Added table about ground truth detections per class

Signed-off-by: Jim Martens <github@2martens.de>

appendix.tex

@@ -41,3 +41,28 @@ Lastly, the SSD implementation from a third party repository
 has been modified to work inside a Python package architecture and
 with eager mode. It is stored as a Git submodule inside the package
 repository.
+
+\chapter{More Figures and Data}
+
+In this chapter you can find further tables that back up some of the
+points in the thesis but did not make it into it.
+
+\begin{table}[htbp]
+    \centering
+    \begin{tabular}{rcc}
+        \hline
+        class & number of & percentage of \\
+        & detections & total \\
+        \hline
+        total & 31,991 & 100\% \\
+        persons & 10,988 & 34.3\% \\
+        cars & 1,932 & 6\% \\
+        chairs & 1,791 & 5.6\% \\
+        bottles & 1,021 & 3.2\% \\
+        cups & 898 & 2.8\% \\
+        \hline
+    \end{tabular}
+
+    \caption{Number of ground truth detections per class (top 5).}
+    \label{tab:gt-spread}
+\end{table}