Need urgent help with Affidavit of Support question

[am401202]

My spouse (LPR) is the petitioner. I am the beneficiary, and I am on H1B. My I-130 is approved and now I need to File I-485. And one of the requirement is that petitioner should file Affidavit of Support for me. And my wife is not employed in past 3 years. Actually she never worked. But since our wedding back in 2011, I have filed Joint Tax returns (2011,2012). And being a house hold member, can i put my income in form I-864 which she needs to submit as a petitioner. And as my income is good enough but I am on H1B, then Do I need any third person Affidavit of Support?