Whether (and when) the population of the earth will exceed the total
number of people that have died depends on some uncertainties. That
said, it appears that this will not occur in the next 50 years, and
will most likely never occur.
There is a better estimate of the total number of people who have died:
The US Census Bureau lists a 1995 article by Carl Haub. If I search
Google for "How Many People Have Ever Lived on Earth?" (the title of
that article) I get this site:
as one of the hits.
This site list uncertainties and uses the word, "guesstimates." Their
discussion is informative, though. They include not only people alive
at various time benchmarks (as I did) but also "births between
benchmarks." This gives a better estimate of the total number of
people who have ever lived. Their value for the number of people who
have ever lived up to 2002 is 106,456,367,669 (14 times my simple
The US Census has a site titled "Total Midyear Population for the World: 1950-2050"
The expected world population in 2050 is 9,224,375,956 , obviously far
short of the number of people who have ever been born - and in the
meantime, the total number of people who have died keeps climbing
Here are some additional confirming calculations regarding the number
of people who have died in the 20th century: Going back to the article
on "How many people have ever lived on earth," I can take the
population in 1900, add in the "births between benchmarks" for 1900 -
1950, 1950 - 1995, and 1995 - 2002, and subtract the world's
population in 2002 to find that 5,242,490,715 people died between 1900
and 2002. In my previous simple underestimate, I just used that fact
that essentially all the people alive in 1900 had died by today.
Another site's numbers for total deaths in the 20th century roughly
agrees with the above site's numbers:
"Total Deaths During the 20th Century
Approximately 4,126,000,000 people have died during this century from
all causes. If man-made megadeaths account for 185 million of them,
then one out of every 22 (or 4.5%) human deaths during the 20th
Century have been caused by fellow humans."