There's only four repeating chords through the whole song.  They are, in this order:

E:
e|X--------------------------------------------------------------------------|
B|5--------------------------------------------------------------------------|
G|4--------------------------------------------------------------------------|
D|6--------------------------------------------------------------------------|
A|7--------------------------------------------------------------------------|
E|X--------------------------------------------------------------------------|

F#m:
e|2--------------------------------------------------------------------------|
B|2--------------------------------------------------------------------------|
G|2--------------------------------------------------------------------------|
D|4--------------------------------------------------------------------------|
A|4--------------------------------------------------------------------------|
E|2--------------------------------------------------------------------------|

A:
e|5--------------------------------------------------------------------------|
B|5--------------------------------------------------------------------------|
G|6--------------------------------------------------------------------------|
D|7--------------------------------------------------------------------------|
A|7--------------------------------------------------------------------------|
E|5--------------------------------------------------------------------------|

Am:
e|0--------------------------------------------------------------------------|
B|1--------------------------------------------------------------------------|
G|2--------------------------------------------------------------------------|
D|2--------------------------------------------------------------------------|
A|0--------------------------------------------------------------------------|
E|x--------------------------------------------------------------------------|

This is my first tab, so please excuse me if I did not follow proper etiquette.