It’s not bad for lots of stuff though always useful to have a pinch of salt at the ready 
In this case I knew the outlines of the story but needed the figures, they are in the general vicinity of what I expected, so I think are probably accurate.
One problem with Wikipedia is that it can be very difficult to check its veracity online because you get lots of copies of exactly the same information - quite frustrating to find that “second source” has just lifted the Wikipedia text and re-produced it on their own site.