Tabbed by spiritstereo 

Other than the second half of the verse, the bassline mostly follows the guitar.  I 
there are a few slightly more complex things done here but these are the basic notes:

First half of verse
("I could be wrong...")

G|———————————————————————————————|
D|———————————————————————————————|
A|—————————3———————5—————————————|
E|—3—————————————————————————————|
Second half of verse
("I could be wrong I could be right!  I could be black I could be white!")

G|—————0—————————————————————————|
D|———————————0———————0———————————|
A|—0h2———0h2————0h2—————0h2——————|
E|——————————————————————————3————|
Chorus
("May the road rise with you...")

G|———————————————————————————————|
D|———————————————————————————————|
A|—0h5—————5—————5———————————————|
E|—————————————————————3—————————|
Bridge
("Anger is an energy...")

G|———————————————————————————————|
D|———————————————————————————————|
A|——2—————2——————————————————————|
E|—————0—————0————0————0—————————|