So let's see what's going on here. The horizontal axis here, they say years since 1965. So this point right over here, this is zero years since 1965, so this really represents 1965. And we see it looks like around, let's see if I were to eyeball it, it looks like it's around 42% of Americans, just looking at this graph, I know that's not an exact number, roughly 41 or 42% of Americans smoked in 1965 based on this graph. And then five years later, this would be 1970, 10 years later, that would be 1975. And they don't sample the data, or we don't have data from every given year. This is just from some of the years that we happen to have.