Table 4. The median length of life
In the abridged life tables for 2002, the number of survivors at age 65 is 85,384 for males and 92,922 for females in a stationary population supported by 100,000 annual live births. These facts lead that the survival ratio until age 65 is 85.4% for males and 92.9% for females. In the same way, it follows that the survival ratio until age 80 is 54.2% for males and 75.9% for females.
The median length of life, which means the age when exactly half of the cohort remain alive, is 81.28 years for males and 88.02 years for females.