Check those numbers. In 1993 the contribution rate in my plan (most are very similar) was $2.45 X 2080.
I had to go to the archives, but yes you're actually pretty close. It was 2.65 in 93 then increased to 3.30 by 97. My last year, 2015, it was roughly $9 based on a starting rate of 8.36 in 2013 then adding two annual increases of between .25 and .50 per hour, depending on whatever was left after healthcare premiums for those years. Still, even after the giant loss from the first market collapse after 9/11, and after they recalculated the accrual rate lower, I ended up fine and the plan (so far) is funded in the 90% range annually.
I'm hopeful Congress will pass the legislation that allows for the partitioning of the employers within a fund like CS, and prevent our retirees from being punished for others shortfalls.