Usafacts.org is a trove of data that is useful to have discussion around - op (and folks in this thread ;) ) don't need to rely on their gut feelings.
In addition to 1993 being boring, the majority of expenses are far and away instruction related versus student services (the luxury college memes folks are taking about isn't strictly true).
I think the most interesting point is that over the past 40 years, all types of expenses continue to grow at the same rate. (Inflation adjusted of course) There doesn't seem to be any ceiling in sight or any meaningful changes in what colleges will spend money on. Naturally tuition costs are on similar upward trend to balance this - and folks still somehow find the finances to pay for it.
This doesn't seem sustainable but it also doesn't seem to be stopping any time soon. Too many students trying to do 'the right thing' are being sucked into this meat grinder.