There are 40 cases per 100,000 people
in any given year. Your chance of developing colorectal cancer at any point in your life is about 4.3%, with a survival rate at five years of about 65%. An 18% increase in risk of developing colorectal cancer equates to about a 0.5% chance of dying prematurely.
Some people will survive beyond five years but die of cancer anyway; I didn't bother factoring this in, partly because I'm lazy, partly because I couldn't find relevant data and partly because the median age at diagnosis for colorectal cancer is 67.
https://seer.cancer.gov/statfacts/html/colorect.html
