My idea is to get the same output as in this previous post but with a different approach as the previous has some limitations.
So the goal is to have the first reference of each year in my bibliography showing the correspondent year on the left, as it was a normal cventry.

The problem is I have multiple bibliographies and I use multibib with \newcites so I can have different headings in each one of them (ex, "oral presentations", "poster presentations", etc). But because the previous approach removes the thebibliography environment I loss the heading information as well.
I know that I could just simply insert a new heading manually but I would prefer a different solution (more automatic lets say).
The previous post (one of the answers) suggested this code "If you want each year to appear only for the first paper of that year"
STRINGS {oldyear}
FUNCTION {year.or.none}
{ 's :=
oldyear empty$
{ s 'oldyear := s }
{ s oldyear =
{ "" }
{ s 'oldyear := s }
if$
}
if$
}
I was wondering if one could use the year.or.none function and biblabel together and display the year (or none) in the following code line:
\renewcommand\bibliographyitemlabel{\@biblabel{XXX}}
EDITED I
Here is a mock-up of what I want to achieve: 
Please let me know if you need the code I am using. Note that the years shown were added manually on Photoshop.
EDITED II
The .bst file I used can be found here. I have made some modifications to achieve the final style I wanted. Below is a link to the actual bibliography style in use (because there is a limitation to the number of characters that can be used in this post I could not paste it here).
https://www.dropbox.com/s/evvx9dr7qhpbz2h/simon_bonner_cv.bst
