The entire song has the same chord progression. It is very simple and as follows:
[B]I got high, with Sufjan Stevens f[F#]ans
[A]In normal Illinoi[E]se
[B]And this song goes out, to all you beautiful[F#]
[A]American girls and boys[E]
[B]I got high, with Sufjan Stevens f[F#]ans
[A]In normal Illinoi[E]se
[B]And this song goes out, to all you beautiful[F#]
[A]American girls and boys[E]