Proving you've been here 5 years

Hi,
I am anxious to start my process to finally get my work permit.
I am a little worried though. If anyone can answer a question for me I'd really appreciate it.

I know that you have to prove that you've been in the US for the past 5 years.
My question is, do I have to have proof for every month in those years?
For example, for 2009 I only have proof for October when I was in the hospital.

Also, for 2010-2012 my only proof would be bank statements.
I assume that bank statements would suffice, correct?
If so, would I have to send one statement for each year or 12 for every month?
I don't want to leave anything up to chance.

Lastly, do I just have to prove the last 5 years or prove I was here from date of entry to present day?

Thank you for your time reading thing.
This is my first post, long time reader of these forums.
But on such a day as today I had to post.
Thank you.


Sorry, did not see that FAQ Sticky thread at the top of the forum.

get your school transcripts, it shows your classes and the period you took your classes, that's what I'm doing!