In my case I don’t really see any trend. I had a look at the last 5 years of my Lightroom archive and it looks like this:
Year: DSLR / P&S
2013: 5700 / NA
2014: 3500 / NA
2015: 4900 / 1200
2016: 5000 / 2700
2017: 4900 / 1600
(I got myself a G7X in 2015, in 2013-14 I only used my DSLR.)
These numbers don’t reflect the number of exposures – these are the photos that I’ve kept after deleting the worst garbage. I seem to keep around 5k DSLR shots and 2k P&S shots per year.