This is bullshit. You forgot to control for so many factors.
1) These numbers are not for same jobs. Men and women choose to study in different fields, and end up working in different fields.
2) Men work longer hours
3) Men take fewer sick days
4) Men negotiate salaries better
5) Men take on more dangerous jobs
I wouldn't go as far as imaginenore, but you do really need to control for "years of experience" or "job title", not simply "occupation". Sadly, job titles vary a lot, but it would help.
_Nevertheless_ the numbers are getting better as you control for things! It suggests that, as you control for more factors, the wage gap will shrink to nothing.