Ten years ago, it was 1999. We called that year "nineteen-ninety-nine". Canada became a nation in 1867. We called that year "eighteen-sixty-seven". For the past nine years, however, we took a different approach to how we say our calendar years.
This is 2009. We all say "two-thousand-and-nine". For some reason, we don't say "twent-oh-nine". I think that's because the "oh" part of "twenty-oh-nine" is awkward.
Next year is 2010. I'll bet we all call it "two-thousand-and-ten". Shouldn't we go back to the way it always was and call it "twenty-ten"?
Which will it be: two-thousand-and-ten or twenty-ten?