Age    Time PY    Cases
45-54   0    25041 12
45-54   1    24545  4
45-54   2    22568  3
45-54   3    14314  2
55-64   0    24933 35
55-64   1    24211 16
55-64   2    22456  7
55-64   3    14494  8 
65-74   0    29836 84
65-74   1    19068 24
65-74   2    17643 19
65-74   3    11045 12

Note: Time is years since screen.
      PY is person years for time > 0 and number screened
         for time=0.