I think its in the 1.5 - 1.7 range right now. Young families often live in 2 bedroom units for at least a little while, there are plenty of young kids running around cityplace if you ever visit it. That drives up occupancy averages, as well as students renting a 2 bedroom + Den with 3 people living in it.
The opportunity is there for families to live in condos, every building has 3 bedroom units, its just that nobody buys them. It costs just as much to buy an inner city home as it does to buy a 3 bedroom condo, and many opt for that. The finances for 3 bedroom condos will start to get better in the next couple of years with stagnating condo prices and skyrocketing home prices, so I can see demand for 3 bedroom units increasing soon.