Brains working towards machine consciousness

As I am not feeling great today, and some mention of mortality statistics attracted my attention on television the other evening (not that I am feeling that bad!) I thought I would take a look at the life expectancies of people in the UK.
The National Statistics Office publish this information, but something has always intrigued me - their figures don't take account of the future trends - so what happens if you try to model future performance based on the past?