It would be interesting to see trends of planned vs unplanned families. How many would be births get stopped with Plan B, etc?

In the Philippines, I'm not even sure you can get plan B pills, though there are other options I believe. The Catholic Church has generally frowned on any sort of birth control. Abortions are not legal.

Seems like dwindling birth rate would be a cultural shift rather than economic. I'm skeptical of a survey which asks if you're planning to have kids though. I'm single right now and I would say I'm unlikely to have kids. A relationship next month could change that.