How rare is it that I have "foundblocks 1" on my antminer d3??

I've been running it since the start of December on my 19.3 gh/s d3? It makes me wonder if I should have just solo mined because I would have just earned 1.9 Dash coins instead of what I have now (less than .41 dash)

https://i.imgur.com/tN6uTvV.png