The first map may be what you are looking for, it is generic in nature.
Here is a 2013 map, showing a sharp decline but still a strong threat. Piracy is not “an expensive enough problem” for the US Government to take it seriously. This was clearly and explicitly laid out, down to commercial imagery of the villages, docks, and specific boats, in a CENTCOM J-2 Plans memorandum written in 2005. The emerging threat and the need to take non-state and individual actors seriously has been on the table since 1988. There just is not enough money in it to get those who wish to be bribed and those who do the bribing interested.
Eventually there could be a safe passage marketplace that is funded by insurance companies utilizing rapid response private military contractors and full-up Internet access world-wide. Eventually publics are going to refuse to pay for government programs that are rooted in corruption and buying “big” things that do not serve the public interest. Right now we are all caught between the rotting dinosaurs and the hatching birds of paradise.