\begin{center}
\begin{tikzpicture}
    \begin{axis}[
        x tick label style={
            /pgf/number format/1000 sep=
        },
        xtick = data,
        ybar,
        bar width=30pt,
        xlabel={Metai},
        ylabel={$DN_n$},
        width=400pt,
        height=150pt,
        grid=major,
    ]
        \addplot+[draw=black, pattern=vertical lines,] coordinates {
            (2009, 7.52e5)
            (2008, 6.72e5)
            (2007, 7.52e5)
        };
    \end{axis}
\end{tikzpicture}
\end{center}
\textsf{3.1.1 pav. $DN_n$ kitimo grafikas.}\\