I'd say we'd need at least two years until that. The first to make a life table [0] and determine increased risk for each age in years. Then we could assume ea

I'd say we'd need at least two years until that. The first to make a life table [0] and determine increased risk for each age in years. Then we could assume each person's added risk at successive ages is similar to people of that age this year. The second (and further) years would support or disprove that assumption. My guess is disprove.