In reading [this article](https://medium.com/starts-with-a-bang/the-scientific-story-of-how-each-element-was-made-7a8ea114d97d) about the origins of elements, I found the following diagram:

[![enter image description here](https://i.stack.imgur.com/yPnow.jpg)](https://i.stack.imgur.com/yPnow.jpg)

What strikes me about this image is the very consistent zig-zagging of the line that appears to indicate that elements/isotopes with an even number are more abundant.

Am I correct? What's going on here?