Deaths per $10^8$
Year     vehicle-miles         DFR
'62         4.9
'63         5.1                 .2
'64         5.2                 .1
'65         5.1                -.1
'66         5.3                 .2
'67         5.1                -.2
'68         4.9                -.2
'69         4.7                -.2
'70         4.2                -.5
'71         4.2                . 0