I worked for my dad for about a year *rolls eyes* detailing cars and boats before i had my son. Just a side note, not a job i recommend during pregnancy, even if you are 17 and in decent shape, lol. Well, not for my dad at least--he was a tough boss, haha.
I've also been volunteering (they paid me occasionally though) every week at church for over 6 years. I guess that's something else i could put on my resume at least, lol.
So...i voted for 1 year.