A research method akin to watching loading docks. Here's an example that will help you front-run the 0 to 1-year crowd, from Metro.UK (I think it was originally from the Mirror):
Supermarket giant Tesco has predicted that the nation could be set for a baby boom following a surge in demand for pregnancy products.
Tesco said sales of folic acid and other nutrients which help babies develop during pregnancy have risen by 51%.
The retail chain has also seen a 9% decline in condom purchases during the last year....MORE