http://jamanetwork.com/journals/jam...bstract/2647859

Graphs for white, black, and combined here. One thing you can see--even with the bounce up, black people are still getting more colon cancer mortality than white people. Mortality is expressed as cases per 100 000, looking at the graph, it looks like 2004 to 2014 the number for "white" increases from around 3.8 or so to around 4, so we're down to trying to explain a couple of cases per million.