Does that even matter? US GDP is orders of magnitude larger than Iran. The American way of war has long been based on minimizing casualties through overwhelming materiel superiority and profligate ammunition expenditure. Back in WWII the USA literally out produced Japan by 1000:1 in some types of munitions. Our industrial base has decayed a bit lately but that's a fixable problem.
replyIt matters in so far as the production rate for e.g. air defense interceptors is much lower than the rate at which they've been used in the Iran war. Which is probably one of the reasons the US was ready for a ceasefire.
replyThey might have enough stockpiles to continue this war for a while, but it thins out the capabilities in other theaters, making the US generally more vulnerable.