Not a graph, but might be helpful:
6 Worst % Dow Declines
2008 -5.05 Barack Obama
1932 -4.51 Franklin Roosevelt
1948 -3.85 Harry Truman
1940 -2.39 Franklin Roosevelt
1976 -0.99 James Carter
1992 -0.91 William Clinton
6 Best % Dow Gains
1896 +4.54 William McKinley
1900 +3.33 William McKinley
1908 +2.38 William Taft
1936 +2.26 Franklin Roosevelt
1912 +1.83 Woodrow Wilson
1980 +1.70 Ronald Reagan
The bad thing about the Worst %drop is the fact that it will be scored as an Bush economy failure since it happened on his watch.