age	smoking	deaths	person-years
1	smoker	32	52407
2	smoker	104	43248
3	smoker	206	28612
4	smoker	186	12663
5	smoker	102	5317
1	non	2	18790
2	non	12	10673
3	non	28	5710
4	non	28	2585
5	non	31	1462