tuico presidentes de eeuu

		Presidente	columnas	Inicio del mandato (año)
1		Barack Obama		2.009
2		George W. Bush		2.001
3		Bill Clinton		1.993
4		George Herbert Walker Bush		1.989
5		Ronald Reagan		1.981
6		Jimmy Carter		1.977
7		Gerald Ford		1.974
8		Richard Nixon		1.969
9		Lyndon Johnson		1.963
10		John F. Kennedy		1.961
11		Dwight D. Eisenhower		1.953
12		Harry Truman		1.945
13		Franklin Delano Roosevelt		1.933
14		Herbert Hoover		1.929
15		Calvin Coolidge		1.923
16		Warren Harding		1.921
17		Woodrow Wilson		1.913
18		William Howard Taft		1.909
19		Theodore Roosevelt		1.901
20		William McKinley		1.897
21		Grover Cleveland		1.893
22		Benjamin Harrison		1.889
23		Grover Cleveland		1.885
24		James Abram Garfield		1.881
25		Chester Alan Arthur		1.881
26		Rutherford Birchard Hayes		1.877
27		Ulysses Simpson Grant		1.869
28		Andrew Johnson		1.865
29		Abraham Lincoln		1.861
30		James Buchanan		1.857
31		Franklin Pierce		1.853
32		Millard Fillmore		1.850
33		Zachary Taylor		1.849
34		James Knox Polk		1.845
35		William Henry Harrison		1.841
36		John Tyler		1.841
37		Martin Van Buren		1.837
38		Andrew Jackson		1.829
39		John Quincy Adams		1.825
40		James Monroe		1.817
41		James Madison		1.809
42		Thomas Jefferson		1.801
43		John Adams		1.797
44		George Washington		1.789