At Transforma Insights we closely track Communications Service Providers and how they are addressing the IoT market. We know you loved it last time, so here's an update of the CSP IoT connection ranking. This chart shows the evolution of the numbers of connections from 2010 to 2020.
The grand total for the accumulated connections of the top 34 operators at end 2020 was 1.43 billion, up from 1.27 billion at end 2019. That's an increase of 160 million (i.e. up 13%) over the year. That is only just less than half the growth in 2019, which was 326 million (which itself represented a growth of 34%).
Edit: revision of some numbers brought the figures down from the 1.45 billion initially posted in this blog post to 1.43 billion.