Nicotine levels in cigarettes have jumped by almost 2% each year

Researchers at the Harvard School of Public Health say that nicotine levels in cigarettes have increased by an average of 1.6% each year since 1997. The researchers confirmed a study that looked at over 100 brands of cigarettes and found that each year there was an increase in the amount of nicotine going to the lungs. I guess I shouldn't be surprised. Anyone else see "Thank You For Smoking"? I thought it was pretty funny.