I was married in 2005
I was married 16 years ago
It's been 16 years since I was married
I have known my wife for 16 years
During that time we have never had any serious arguments.
I got my driver's license in 2001
I got my driver's license 20 years ago.
It's been 20 years since I got my driver's license.
I've been driving for 20 years
During that time I have had only one car accident