Ok,
So which provinces are using EE so far:
Ontario, BC, Saskatchewan, Nova Scotia, New Brunswick.
And that's it.
In 2017 except of few rare cases (no Idea how did they get to the system), no other province did use it.
And from those that were using it, they did not nominate everybody under EE (some were paper based).
In 2015 app. 15% of PNP was done under EE.
In 2016 it could be somewhere around 20-22%
So estimation of 33% (what I have used for my simplified calculation) is already fairly optimistic.