Neis-one has stats on this:
https://osmstats.neis-one.org/?item=countries&country=Belgium
Overview of countries is here https://osmstats.neis-one.org/?item=countries
Everything #OpenStreetMap related is welcome: software releases, showing of your work, questions about how to tag something, as long as it has to do with OpenStreetMap or OpenStreetMap-related software.
OpenStreetMap is a map of the world, created by people like you and free to use under an open license.
Join OpenStreetMap and start mapping: https://www.openstreetmap.org/.
There are many communication channels about OSM, many organized around a certain country or region. Discover them on https://openstreetmap.community/
https://mapcomplete.org/ is an easy-to-use website to view, edit and add points (such as shops, restaurants and others)
https://learnosm.org/en/ has a lot of information for beginners too.
Neis-one has stats on this:
https://osmstats.neis-one.org/?item=countries&country=Belgium
Overview of countries is here https://osmstats.neis-one.org/?item=countries
Canada, what the hell? 138 active monthly members?
Does that seem high, or low?
To me, it seems low. Under 150 people mapping such a large country with over 40 million people in it? I honestly thought it would be thousands, but i guess that illustrates just how valuable the work of a few can be.
OSM is not popular in Canada, partially due to a vicious cycle where there isn't enough information filled in so people don't use it so nobody contributes. I used it because in my old city the map was basically perfect (I think it was imported from City data,) and I had no data plan so I needed offline maps.
After I moved I noticed that the map was incomplete so I started contributing again. There are around 5 names in my area that I see contributing on a nearly daily basis. That might not seem like much, but I've singlehandedly nearly finished my neighborhood's buildings and sidewalks in the last two months.
Still, get your friends into it. I showed a friend of mine who bikes OrganicMaps after Google Maps routed him on a 4" wide dirt footpath in the dark one night. He was sold right away when I showed him that he can search for water fountains. Another friend of mine loved how detailed OSM was compared to Google Maps and switched as well, and now they help me with Street Complete sometimes. Every bit helps.