Description of chart 1 – Retail sales increase in September

The title of the graph is "Retail sales increase in September."
This is a line chart.
There are in total 61 categories in the horizontal axis. The vertical axis starts at 31 and ends at 43 with ticks every 2 points.
There are 2 series in this graph.
The vertical axis is "billions of dollars."
The units of the horizontal axis are months by year from September 2008 to September 2013.
The title of series 1 is " Current dollars."
The minimum value is 33.411 occurring in December 2008.
The maximum value is 40.729 occurring in September 2013.
The title of series 2 is "  2007 chained dollars."
The minimum value is 33.895 occurring in December 2008.
The maximum value is 39.338 occurring in September 2013.

Retail sales increase in September, billions of dollars
  Current dollars 2007 chained dollars
September 2008 36.433 35.673
October 2008 36.054 35.924
November 2008 34.689 34.889
December 2008 33.411 33.895
January 2009 33.812 34.418
February 2009 33.898 34.289
March 2009 33.941 34.49
April 2009 34.073 34.759
May 2009 34.562 34.971
June 2009 34.84 34.856
July 2009 35.029 35.182
August 2009 35.153 35.242
September 2009 35.353 35.623
October 2009 35.498 35.727
November 2009 35.425 35.298
December 2009 35.657 35.582
January 2010 36.169 36.045
February 2010 36.103 36.072
March 2010 37.097 37.125
April 2010 36.277 36.298
May 2010 36.222 36.343
June 2010 36.417 36.58
July 2010 36.406 36.629
August 2010 36.609 36.812
September 2010 36.83 37.095
October 2010 37.052 36.984
November 2010 37.721 37.537
December 2010 37.602 37.217
January 2011 37.427 36.979
February 2011 37.519 37.179
March 2011 37.536 36.831
April 2011 37.786 36.984
May 2011 37.951 36.991
June 2011 38.399 37.713
July 2011 38.093 37.322
August 2011 38.188 37.355
September 2011 38.568 37.565
October 2011 38.892 37.878
November 2011 39.085 38.07
December 2011 39.029 38.182
January 2012 39.087 38.116
February 2012 38.967 37.973
March 2012 39.103 38.074
April 2012 38.942 37.63
May 2012 39.024 37.978
June 2012 38.88 37.978
July 2012 39.139 38.19
August 2012 39.268 38.113
September 2012 39.331 38.113
October 2012 39.539 38.231
November 2012 39.768 38.739
December 2012 38.876 37.892
January 2013 39.236 38.315
February 2013 39.574 38.115
March 2013 39.53 38.253
April 2013 39.617 38.539
May 2013 40.317 39.193
June 2013 40.072 38.71
July 2013 40.274 38.868
August 2013 40.333 38.941
September 2013 40.729 39.338