\documentclass{article}

\usepackage{tikz}
\usepackage{pgfplots}
\usepgfplotslibrary{dateplot}

\begin{document}
\begin{tikzpicture}
    \begin{axis}[
        width=\linewidth,
        height=0.6\linewidth,
        axis lines=left,
        ymin=0,
        ylabel={Price},
        date coordinates in=x,
        x tick label as interval,
        xticklabel={\year}
    ]

    \addplot
    [draw=black, mark=none]
    table {
        2009-01-02 31.42
        2009-01-09 29.64
        2009-01-16 27.44
        2009-01-23 27.92
        2009-01-30 28.6
        2009-02-06 28.16
        2009-02-13 27.65
        2009-02-20 27.49
        2009-02-27 29.79
        2009-03-06 29.08
        2009-03-13 30.94
        2009-03-20 31.28
        2009-03-27 30.1
        2009-04-03 30.05
        2009-04-10 33.7
        2009-04-17 32.4
        2009-04-24 31.56
        2009-05-01 32.62
        2009-05-08 33.7
        2009-05-15 34.16
        2009-05-22 37.34
        2009-05-29 35.55
        2009-06-05 33.15
        2009-06-12 35.03
        2009-06-19 36.76
        2009-06-26 35.73
        2009-07-03 36.1
        2009-07-10 36.65
        2009-07-17 38.36
        2009-07-24 37.97
        2009-07-31 34.21
        2009-08-07 31.32
        2009-08-14 30.44
        2009-08-21 30.32
        2009-08-28 29.1
        2009-09-04 29.83
        2009-09-11 30.91
        2009-09-18 29.76
        2009-09-25 28.31
        2009-10-02 28.47
        2009-10-09 27.9
        2009-10-16 26.81
        2009-10-23 26.07
        2009-10-30 27.51
        2009-11-06 27.72
        2009-11-13 28.52
        2009-11-20 28.2
        2009-11-27 28.55
        2009-12-04 27.69
        2009-12-11 28.48
        2009-12-18 28.95
        2009-12-25 30.68
        2010-01-01 30.88
        2010-01-08 29.82
        2010-01-15 28.17
        2010-01-22 28.92
        2010-01-29 29.69
        2010-02-05 31.84
        2010-02-12 34.23
        2010-02-19 34.88
        2010-02-26 33.76
        2010-03-05 35.37
        2010-03-12 35.87
        2010-03-19 36.65
        2010-03-26 35.12
        2010-04-02 38.46
        2010-04-09 39.26
        2010-04-16 39.6
        2010-04-23 37.92
        2010-04-30 38.62
        2010-05-07 38.87
        2010-05-14 39.51
        2010-05-21 41.78
        2010-05-28 39.65
        2010-06-04 38.03
        2010-06-11 37.16
        2010-06-18 38.74
        2010-06-25 40.05
        2010-07-02 39.09
        2010-07-09 40.07
        2010-07-16 40.73
        2010-07-23 38.5
        2010-07-30 38.49
        2010-08-06 38.85
        2010-08-13 39.85
        2010-08-20 41.31
        2010-08-27 39.58
        2010-09-03 37.62
        2010-09-10 37.07
        2010-09-17 36.76
        2010-09-24 37.86
        2010-10-01 37.2
        2010-10-08 36.15
        2010-10-15 37.84
        2010-10-22 37.31
        2010-10-29 36.11
        2010-11-05 36.06
        2010-11-12 35.76
        2010-11-19 36.3
        2010-11-26 36.05
        2010-12-03 38.42
        2010-12-10 43.13
        2010-12-17 43.46
        2010-12-24 43.24
        2010-12-31 40.37
        2011-01-07 38.43
        2011-01-14 39.96
        2011-01-21 40.44
        2011-01-28 38.82
        2011-02-04 39.98
        2011-02-11 39.71
        2011-02-18 40.81
        2011-02-25 41.61
        2011-03-04 40.89
        2011-03-11 40.56
        2011-03-18 40.44
        2011-03-25 40.79
        2011-04-01 40.94
        2011-04-08 42.2
        2011-04-15 43.61
        2011-04-22 43.08
        2011-04-29 42.71
        2011-05-06 42.21
        2011-05-13 40.05
        2011-05-20 38.75
        2011-05-27 36.67
        2011-06-03 36.08
        2011-06-10 34.11
        2011-06-17 33.37
        2011-06-24 31.61
        2011-07-01 28.54
        2011-07-08 31.2
        2011-07-15 33.21
        2011-07-22 30.11
        2011-07-29 30.62
        2011-08-05 29.35
        2011-08-12 29.59
        2011-08-19 28.91
        2011-08-26 26.55
        2011-09-02 27.27
        2011-09-09 27.47
        2011-09-16 25.97
        2011-09-23 26.59
        2011-09-30 25.23
        2011-10-07 24.55
        2011-10-14 24.2
        2011-10-21 23.01
        2011-10-28 21.63
        2011-11-04 24.18
        2011-11-11 25.23
        2011-11-18 24.16
        2011-11-25 26.15
        2011-12-02 26.06
        2011-12-09 25.9
        2011-12-16 28.49
        2011-12-23 26.9
        2011-12-30 26.4
        2012-01-06 25.65
        2012-01-13 24.95
        2012-01-20 26.71
        2012-01-27 25.26
        2012-02-03 25.31
        2012-02-10 27.51
        2012-02-17 28.49
        2012-02-24 29.84
        2012-03-02 28.77
        2012-03-09 28.64
        2012-03-16 29.07
        2012-03-23 28.27
        2012-03-30 26.64
        2012-04-06 29.61
        2012-04-13 29.34
        2012-04-20 28.7
        2012-04-27 29.11
        2012-05-04 29.11
        2012-05-11 29.06
        2012-05-18 31.27
        2012-05-25 29.51
        2012-06-01 28.3
        2012-06-08 26.42
        2012-06-15 25.92
        2012-06-22 27.59
        2012-06-29 26.9
        2012-07-06 27.7
        2012-07-13 26.9
        2012-07-20 26.4
        2012-07-27 26.56
        2012-08-03 27.17
        2012-08-10 28.31
        2012-08-17 27.36
        2012-08-24 27.67
        2012-08-31 29.1
        2012-09-07 28.6
        2012-09-14 26.92
        2012-09-21 26.02
        2012-09-28 23.99
        2012-10-05 24.28
        2012-10-12 26.66
        2012-10-19 26.24
        2012-10-26 25.1
        2012-11-02 27.02
        2012-11-09 26.59
        2012-11-16 27.73
        2012-11-23 26.63
        2012-11-30 27.15
        2012-12-07 29.16
        2012-12-14 30.78
        2012-12-21 29.56
        2012-12-28 33.11
        2013-01-04 33.57
        2013-01-11 33.35
        2013-01-18 34.76
        2013-01-25 36.51
        2013-02-01 35.27
        2013-02-08 34.84
        2013-02-15 36.13
        2013-02-22 37.03
        2013-03-01 38.97
        2013-03-08 38.9
        2013-03-15 37.7
        2013-03-22 36.02
        2013-03-29 37.93
        2013-04-05 39.85
        2013-04-12 42.27
        2013-04-19 43.23
        2013-04-26 42
        2013-05-03 42.41
        2013-05-10 42.31
        2013-05-17 43.51
        2013-05-24 43.81
        2013-05-31 40.77
        2013-06-07 40.22
        2013-06-14 39.22
        2013-06-21 41.19
        2013-06-28 43.4
        2013-07-05 45.15
        2013-07-12 44.26
        2013-07-19 45.12
        2013-07-26 43.01
        2013-08-02 40.14
        2013-08-09 39.92
        2013-08-16 43.43
        2013-08-23 42.03
        2013-08-30 38.16
        2013-09-06 37.31
        2013-09-13 33.73
        2013-09-20 30.04
        2013-09-27 32.82
        2013-10-04 35.87
        2013-10-11 35.68
        2013-10-18 38.32
        2013-10-25 38.74
        2013-11-01 39.7
        2013-11-08 38.5
        2013-11-15 36.98
        2013-11-22 39.94
        2013-11-29 40.17
        2013-12-06 45.65
        2013-12-13 48.61
        2013-12-20 48.52
        2013-12-27 50.58
        2014-01-03 50.34
        2014-01-10 48.75
        2014-01-17 49.27
        2014-01-24 49.72
        2014-01-31 46.8
        2014-02-07 45.62
        2014-02-14 49.41
        2014-02-21 48.76
        2014-02-28 46.68
        2014-03-07 44.13
        2014-03-14 44.07
        2014-03-21 43.63
        2014-03-28 43.83
        2014-04-04 44.01
        2014-04-11 44.35
        2014-04-18 47.4
        2014-04-25 46.29
        2014-05-02 44.62
        2014-05-09 42.03
        2014-05-16 40.28
        2014-05-23 39.37
        2014-05-30 38.83
        2014-06-06 37.65
        2014-06-13 37.51
        2014-06-20 36.47
        2014-06-27 33.6
        2014-07-04 37.6
        2014-07-11 41.66
        2014-07-18 42.26
        2014-07-25 42.23
        2014-08-01 37.7
        2014-08-08 37.48
        2014-08-15 35.82
        2014-08-22 34.95
        2014-08-29 34.87
        2014-09-05 35.71
        2014-09-12 34.43
        2014-09-19 34.05
        2014-09-26 35.43
        2014-10-03 35.59
        2014-10-10 34.4
        2014-10-17 34.44
        2014-10-24 36.51
        2014-10-31 37.06
        2014-11-07 37.61
        2014-11-14 39.95
        2014-11-21 41.76
        2014-11-28 43.38
    };

    \end{axis}
\end{tikzpicture}

\end{document}