alter    ynr  tnr    yr   tr      yt  tt
"35-44"   2   18790   32  52407   34  71197
"45-54"  12   10673  104  43248  116  53921
"55-64"  28    5710  206  28612  234  34322
"65-74"  28    2585  186  12663  214  15248
"75-84"  31    1462  102   5317  133   6779
