readings - How do you read zeros in abbreviated years? (i.e. ０３年)

I came across ０３年度 and ０９年度, and while the meaning is clear I didn't know the actual way of reading it. My first reaction was ゼロさんねんど, but I have no way of checking if that's right. I thought it might also be simply, さんねんど, but again I can't tell.