ThinkProgress has a timeline of the major events, from the official start of the war til the official end. And reading through it is just stomach-churning.

A TIMELINE OF THE IRAQ WAR

APRIL 23, 2003: USAID Administrator Andrew Nastios Claims Rebuilding of Iraq Could Be Accomplished With $1.7 Billion

TED KOPPEL: I mean, when you talk about 1.7, you’re not suggesting that the rebuilding of Iraq is gonna be done for $1.7 billion?

NATSIOS: Well, in terms of the American taxpayers contribution, I do, this is it for the US.
[…]
KOPPEL: You’re saying the, the top cost for the US taxpayer will be $1.7 billion. No more than that?

NATSIOS: For the reconstruction. And then there’s 700 million in the supplemental budget for humanitarian relief, which we don’t competitively bid ’cause it’s charities that get that money.

KOPPEL: I understand. But as far as reconstruction goes, the American taxpayer will not be hit for more than $1.7 billion no matter how long the process takes?

NATSIOS: That is our plan and that is our intention. And these figures, outlandish figures I’ve seen, I have to say, there’s a little bit of hoopla involved in this. [ABC, Nightline, 4/23/03]