Your numbers might be correct, but here is another statistic that os extremely relevant and extremely promising: https://duckduckgo.com/traffic

Summary: duckduckgo traffic seems to be increasing approximately exponentially for a while and as far as I can see the trend still continues.

This is extremely interesting, here are three thoughts:

- their are already profitable and have been for a long time already. This is probably very good money (operating costs probably scales slower than revenue)

- it means more search data for DuckDuckGo which will allow them to improve their engine

- it improves their position when they deal with partners (like Bing)