Table:
text: United States Presidents and control of Congress
Presidents by congressional control and terms won/served
Presidents by congressional control and terms won/served
_ President President_s_Party Senate_with Senate_opposed House_with House_opposed Years_served Elections_won_
10 John Tyler Whig/none 4 0 2 2 4 0
11 James Polk Democratic 4 0 2 2 4 1
12 Zachary Taylor Whig 0 1 0 1 1 1
13 Millard Fillmore Whig 0 3 0 3 3 0
14 Franklin Pierce Democratic 4 0 2 2 4 1
15 James Buchanan Democratic 4 0 2 2 4 1
16 Abraham Lincoln Republican 4 0 4 0 4 2
17 Andrew Johnson Democratic 0 4 0 4 4 0
18 Ulysses Grant Republican 8 0 6 2 8 2
19 Rutherford Hayes Republican 2 2 0 4 4 1
20 James Garfield Republican 0 0.5 0.5 0 0.5 1

Question: How many years did Ulysses Grant serve as President of the United States and control Congress?