Milk was $0.14/gallon 80 years ago[1] ($.13/gallon 81 years ago), and $3.77/gallon last year[2].
$34/gallon in 80 years would seem to represent a slowdown of inflation.
[1] https://www.lmtonline.com/lifestyles/article/Milk-went-for-1... [2] https://www.ams.usda.gov/sites/default/files/media/2021Retai...