3rd Pillar contribution when not working 12 months/year?

Hello All

I have just opened a 3rd Pillar account to make my 2012 contribution for the first time. However now I am wondering how much I am allowed to transfer since I have started working the 15th of August, so I have worked 4.5 months so far.

:confused: Can I contribute the full amount (CHF 6'739) or only the proportional part (CHF 2527)?

Many Thanks!