ooh, good catch!  I will change the post to reflect the percentage...that's just silly.
I'm an accountant, I look at numbers all day.  Sometimes we goof :)

Also, for reference, here's easy access to all 2004 MMS reports regarding hurricane damage / shutins / etc.  

It's interesting to note that a weel after Ivan hit, by Sept 22 (it hit on the 14th), shut in was listed as 34% of oil and 19% of gas.  Also note that just a year ago they estimate 1.7 Million BOPD and 12.3 BCFPD for oil and gas, respectively (clearly production has declined a lot just since last year).

Also I think it's important to note that they footnote their shut in report with "** Shut-in production rates do not include production lost due to the destroyed platforms."  So if the platform is gone, the production has been lost (from the 1.x million BOPD estimate) and not just listed as shut in.  I wasn't aware of that.