Do Many Families in Sydney Have More Than One Car?

Here in the United States I know it is very common for families to have more than one car, with some having even more than two cars. I have heard that this is not necessarily the case in other countries, so I am wondering whether there are a lot of families with multiple cars in sydney or whether this is pretty uncommon there. Where can I find out more about this type of thing? I know there must be some place I can go to find out more about the typical belongings since I remember seeing some sort of study like this a while back.