iControlREST: How to get total connections accepted by the host?

I am looking into iControlREST API to get Total connections accepted by the host. I am able to execute "/mgmt/tm/sys/performance/all-stats" this gives me output in textual format rather than JSON format. I know we can get the statistics for individual Virtual Server and add them up. But I wanted to understand whether there are any REST interface where cumulative connections/SSL/Networks etc stats are available.

Thanks