Y axis is not needed... execpt if you want exact number. But the goal of this graph is to show the "reduction" not the exact number of crashes
Let's imagine :
You can see between the beginning and the end, the total of crashes have be reduced about by half.
- If you take 0-100 crashes for Y axis > reduction of about 50 crashes > 50%.
- If you take 0-10 000 crashes for Y axis > reduction of about 5 000 crashes > also 50%.
- If you take 0-1 000 000 crashes for Y axis > reduction of about 500 000 crashes > Oh surprinsing, it's also 50%.
Whatever the value of the Y axis, it's always 50%. So we could said : Cyberpunk is twice as stable in May as in December.