That's true. However, women have a longer average life expectancy in every country in the world, which should (over-)compensate the slight imbalance towards male at birth. Which in fact it does in industrialized countries.
The more interesting fact is when you break down the numbers by age group. By the mid to late twenties, the gender ratio is very close to even. Why do so many men die so early?
We know that parents tend to ignore male children much more. We know male suicide rates are several times those of females. We know that 92% of workplace fatalities are men. We know males are the vast majority of victims of violent crime. We know that most deaths in war are men (consider ISIS taking females captive while killing the males).
What we do not know is why the world is okay building itself on the bodies of men.
Speaking of retirement though, is interesting that despite women living longer than men, a huge number of countries force men to work five more years than women in order to retire.
This is quite fascinating issue. There is also cultural aspect. For instance in China, one child policy created imbalance of genders. Parents prefer their single child to be a boy and with cheap USG they could pick and choose.
Retirement time is also interesting. In Poland we used to have 65 years for men and 60 for women. Now its 67 for both (still in transition period so its increasing slowly to finally settle at 67).
