What's the latest OS that I could have in my MacBook Air from 2006?

So OK, I can't get the OS X Mavericks in my MacBook Air because Im afraid its too old (around 2006-7)

But what's the latest OS that I could use? I already have Mac OS X Lion 10.7.5, is there something else besides Lion I could try? newest?

Greetings from Colombia, South America