Relation between Lung Cancer Mortality and Driver Licenses Issued in United States of America
 
Year Registered Vehicles in millions Licensed Men in millions Men Lung Cancer Mortality* Men Mortality 5 years delay* Men Mortality 10 years delay* Licenced Women in millions Women Lung Cancer Mortality* Women Mortality 5 years delay Women Mortality 10 years delay
65 90 58 49     40 8    
70 108 63 60 49   48 12 8  
75 132 70 65 60 49 59 16 12 8
80 155 77 72 65 60 68 21 16 12
85 171 81 74 72 65 75 27 21 16
90 188 85 74 74 72 81 32 27 21
95 201 89   74 74 87   32 27

*Death rates per 100,000 population.
Sources: NCHC public use file and US Department of Transportation.