I'd spent much of the last decade

You spent the last two years of your life

I've spent most of the last decade on my computer.

- I have not spent decades

It's the last great decade of music.

I spent the last four years of my life...

I spent the last of it getting here.

"For the last six decades of my miserable life,

I spent decades building this firm.

You spent half a decade behind that desk,

You spent your entire life

You spent your whole life

with each decade of life.

if you spent the rest of your life

I spent decades protecting my family from your mistakes.

We've spent the last decade promoting an Imperial viewing festival