Do you mean in a specific country or around the world as the statistics for longevity are strikingly different from country to country (and within the US, even from state to state and county to county). If you indicate which country, I can probably find the stats, but for the US, the latest population breakdown is available here from the US Census Bureau. You can calculate the percentage from the linked chart. You will also be able to see the trend that women live longer than men.
The US Census Bureau is the repository of all this information (you can get the same chart on virtually anything asked on the census). It will take a little time for the statisticians and data entry folks to add the 2010 data, but keep checking back at the general site (look down the left hand column and select “population” and you will see a boatload of choices for some surprisingly interesting data).
In public health, we depend on these kinds of charts to note changing patterns in longevity and other elements of population demographics that give clues as to what is going on in a population. We always frame our questions in the context of what is going on in a population at a given time and place as data can differ so widely over time and from place to place.