T.
Transportation? $2000 per year per kid? Where the heck am I taking my kids? 99% of the time when the kids are in the car, we'd be in the car anyways. We also probably would have purchased a more expensive car instead of what we have to haul around the kids. Thus, the 2000 per kid per year would be 154,000 miles hauling the kids around per year with fuel usage. That's a lot of driving the kids around when I drive my work car 20k/year and my wife drives the family car to work as well as everything else at 25k/year. That's not taking into consideration the cost of 2 kids, only 1 kid. Factor in 2000/year for each of the kids and it's over 300,000 miles worth of gas per year.
With three, you get minivan. I suspect that is where a lot of the transportation costs come from. People who could have a smaller, less expensive, fuel efficient car having minivans. Even with one or two children (need to haul those Scouts) Not many minivan owners in the child free set.