I help out every year on updating the NRC AM LOG and I have some stats you may find of interest. Below is a list by year and te number of AM radio stations on the air in Canada for that year
2011 329
2012 317
2013 300
2014 276
2015 261
2016 256
2017 246
2018 232
2019 216
2020 210
2021 208
2022 205
The incredible shrinking AM radio band NOT counting TIS/HAR stations this is licensed broadcast stations.
Shawn Axelrod to irca iog (2023-03-12)