The A progressions sound best (IMO) if they are all played on the D string like so:
A Aaug A6 A7
e|--0-----x-----0-----0----|
B|--2-----2-----2-----2----|
G|--2-----2-----2-----2----|
D|--2-----3-----4-----5----|
A|--0-----0-----0-----0----|
E|--x-----x-----x-----x----|
He tends to skip the A7 and play a riff instead, so the A7s could all be No Chord.
Capo 4
[Intro]
A Aaug (x2)
[Verse 1]
A Aaug A6 (A7)
Twenty five thousand six hundred thirty six
D
Divided by 13
Bm A
Is the year that you were born
A Aaug A6 (A7)
Needed a calculator to figure out
D Bm A
The time I have wasted every year since you were born
[Chorus 1]
F#m C#m D A E
Ninety percent of the time we're doing fine
F#m C#m D A E
And I'll keep on counting on you to help me keep on towing the line
[Bridge]
A Aaug A6 A7
D Bm
A Aaug (x2)
[Verse 2]
A Aaug A6
One hundred million times every time
(A7)
I have fallen
D Bm A
I am sorry for breaking your heart again
A Aaug A6 (A7)
I need a math degree so you can see
D Bm A
That I'm only counting on you and me
[Chorus 2]
F#m C#m D A E
Ninety degrees is what the thermometer reads
F#m C#m D A E
The weather outside don't matter when you're holding on to me
[Verse 3/Outro]
A Aaug A6 (A7)
Twenty five thousand six hundred thirty six
D
Divided by 13
Bm A
Is the year that you were born
Bm A
Is the year that you were born
D A
Is the year that you were born