The point of it...
Time-lines involve drawing and are therefore difficult to export. To get them so other people can share them, there is a facility to export them as images.
How to do it
The procedure computes as many pictures as there are time-periods in your data (here 14 years), saves each, then compresses them into a .zip file.
With a time- line on screen, choose File | Save As | Images.
Browse for a suitable folder and file-name for the .zip file, press Save.
Open the resulting zip file to view each picture.