The American average is actually ~$35,000 apparently. Though that comes from the wedding industry so they probably undercount small ceremonies and have some incentive to juice the numbers besides. I couldn't really find a good clean table that went back further than the 90s, but qualitatively it sounds like spending spiked in the 80s / early 90s and has mostly stayed with inflation since. Personally, even though I could comfortably afford it, the financial aspect of such an expensive affair would completely suck all the joy and life out of my wedding for me.
https://www.nbcnews.com/id/wbna47681295