Pagerank still 0 - Woorank 67.9
 

I am puzzled.
My site exits almost a year.
I have invested a lot of time in building content, backlinks, promotion on social media, guest posting on forums.

This has resulted in a lot of attention.
The Woorank-score has gone up steadily (has been rock solid at 67.9 for almost a month). Google webmaster states that my backlinks are steadily increasing (747). Majestic has found some 920 backlinks for the entire site.
The Majestic relation between citation and trust (25 - 25) is also quite good for the main page.

But the Google pagerank remains 0. It doens't seem to get an update.

Can someone enlighten me?