There is a counter on the trail at NE 70 St managed by SDOT. The SDOT website provides interesting statistics and graphs showing when trail is used by day of week, month, hours, and impacts of weather. This counter does not recognize scooters because it is an older counter than used on the other trails being monitored by SDOT.

https://sdot.eco-counter.us/site/300062598?flowmode=2

Regarding this counter SDOT responded “The Burke Gilman counter is one of our oldest units and uses hardware that can only detect cyclists.”