This has some estimates and future values: https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.streetwisereports.com%2Farticle%2F2018%2F09%2F14%2Fcrosslayer-about-to-enter-the-big-time.html&data=02%7C01%7C%7C42711a35a624496eaddb08d61cc7215b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636728038908956536&sdata=2L0Medjs19l0gsq97hE6SN6gnlw1CbXW8GGFsZAB2fI%3D&reserved=0