Let me guess. The odds are that you are less than 77.6 years old.
The longevity figures have increased as medical science finds ways to hold off sending a final bill.
The Centers for Disease Control and Prevention, and the National Center for Health Statistics have almost all the data you'll need between now and then: Life Expectancy
My high school held a 100 year reunion September 15. 2006.
Of the 38,797 graduates, 24,176 or 62% could still be alive.