[DropInIn]

One issue in cancer stats is the frequent misattribution of cancers to smoking.

You smoked for 4 years 20 years ago? Then that's what is put as the "cause" for damn near any cancer, which totally destroys the value of the stats.

What we can see though is that rates have generally gone up, either due to increased detection or due to actualized rate increases (most likely a combination of both).