
| YEARS— 
| 5 7 8 9 10 i i2 13 14 15 



SURVIVAL REE 
a 
GO 4==B===2-- -0- - -0-— -0-- -0- - -0- —-0- —- 0-- = @- - - 0 — — 0- - ~05~—0- 
| 2s 3 45 6 7 8 8 10 I 12 13 14 15 
Figure 5.--A Theoretical Example of a Constant Series of Values for 
Survival Index Accompanied by a Progressively Increasing 
Survival Rate in the Population. 
39 
