In the 1860s in Sweden, the oldest ages at death for men and women centered around 101. That average maximum age moved up slowly throughout the century to about 105 in the 1960s and then accelerated to 108 in the 1990s.
Historical records, on the other hand, show that the entire configuration of ages at death in Sweden has been shifting upward for 138 years, he said. The upward trend accelerated suddenly around 1970, more than doubling the rate at which the life span was growing, from less than one year of age for every two decades to more than one year per decade.
This has happened because of medical and public health advances throughout the century, said Wilmoth, whose analysis ruled out simple population growth as a factor. Some scientists had thought that the increased number of very old people could be due to a larger population base, but Wilmoth’s data show that the main cause is increased survival after age 70.
Life expectancy at wikipedia
From present data, the number of worldwide Centenarians is around 450,000. However, if one considers only the total number of Supercentenarians (by definition, persons surviving to ≥ 110 years) this number falls dramatically to estimated 300-450 worldwide, in which only around 70 are validated.
A supercentenarian (sometimes hyphenated as super-centenarian) is someone who has reached the age of 110 years or more, something achieved by only one in a thousand centenarians (based on European data). In turn, only about one supercentenarian in 44 lives to turn 115, or 2% of 110-year-olds can expect to survive five more years.