How many subs did you have when you first turned them on?
I started my channel in July 2006.
In October 2014, I started actually trying to run a channel to get views. On October 1, I had 54 subscribers.
On March 31, 2015, I had 207 subscribers.
In April, one of my videos got suggested on a really popular video and my views and subs increased a lot. By April 8, I had increased to 307.
On April 15 when I decided to turn ads on, I had 978.
By the end of May, which was my highest revenue month until last month, I had a total of 2,710 subs.