Yes, based on the facts as listed here you do.
Behar Intl. Counsel 619.234.5962 Kindly be advised that the answer above is only general in nature cannot be construed as legal advice, given that not enough facts are known. It is your responsibility to retain a lawyer to analyze the facts specific to your particular situation in order to give you specific advice. Specific answers will require cognizance of all pertinent facts about your case. Any answers offered on Avvo are of a general nature only, and are not meant to create an attorney-client relationship.
First, I changed the practice area for your question because it's an immigration law question, not a tax law question even though you are mentioning tax returns and income earned.
Second, if you have more than 2 people in your household, you will need a co-sponsor. Under the 2013 guidelines, a two person household needs a minimum of $19,400 annual income. Based on what you've provided, you squeak by. To be safe, you should consider valuating any assets you have (less any debt owed) to boost this number. It'd be worthwhile to talk with an immigration attorney so you can get more specific information for your particular situation.
You should talk to an attorney. If you do not have sufficient income the last year you would need a joint sponsor. Best Wishes!
Attorney: Immigration Law
13295 Illinois St, Ste 128
Carmel IN 46032
Ph: (317) 660-6174
Contact (317) 660-6174 for specific legal advice. Answers here are not legal advice because they are of general nature and not tailored to your specific situation. You should not act on this answer without checking with an Immigration Attorney.