If you filed a joint return the income for each spouse is not shown on the Form 1040--the income is combined. on the tax return form. You were supposed to save your own W-2's for your personal records. If you need to know each spouse's income then you will need to look at your own W-2's or 1099's or look for the income worksheets in the pdf of your return to see what you entered.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**