Balkendiagramm erstellen

\documentclass{article}
\usepackage{pgfplots}
\usetikzlibrary{calc}
\pgfplotsset{width=10cm,compat=1.15}

\begin{document}
\begin{figure}
  \centering
  \begin{tikzpicture}
    \begin{axis}[
      ybar,
      ymin=0,
      ymax=160,
      bar width=0.5cm,
      symbolic x coords={$<$-9 to -9,-9 to -8,-8 to -7,-7 to -6,-6 to -5,-5 to -4,-4 to -3,-3 to -2,-2 to -1,-1 to 0,0 to 1,1 to 2,2 to 3,3+},
      xtick=data,
      x tick label style={rotate=45, anchor=east},
      ylabel={Annual Excess Return (percentage)},
      xlabel={},
      nodes near coords,
      nodes near coords align={vertical},
      enlarge x limits={abs=1cm},
      width=15cm,
      height=8cm,
      title={Emerging Market Equity Funds versus MSCI Emerging Market Index},
      legend style={at={(0.5,-0.2)},anchor=north,legend columns=-1},
      legend cell align={left},
      area legend
    ]
    \addplot [fill=gray] coordinates {($<$-9 to -9,11) (-9 to -8,7) (-8 to -7,18) (-7 to -6,30) (-6 to -5,69) (-5 to -4,97) (-4 to -3,123) (-3 to -2,142) (-2 to -1,136) (-1 to 0,88) (0 to 1,46) (1 to 2,31) (2 to 3,13) (3+,21)};

    % Hier der Code für die Linie
    \draw[dashed] 
      ($(axis cs:-1 to 0,0)!.5!(axis cs:0 to 1,0)$)coordinate(h)
      -- 
      (h|-current axis.north);

    \end{axis}
  \end{tikzpicture}
  \caption{Annual Excess Return of Emerging Market Equity Funds versus MSCI Emerging Market Index}
  \label{fig:excess_return}
\end{figure}
\end{document}