This &quot;growth rate&quot; measured in percent has always concerned me.  It looks to be unsustainable.  Interesting video: <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=F-QA2rkpBSY" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=F-QA2rkpBSY</a>