Your birthday is the one day a year that is, and probably always has been, all about you. Though the celebrations likely change over time, that special day is usually one filled with fun activities and plenty of cake. But do you know how many other people around the nation are celebrating their own birthday at the very same time? This infographic, created by The Daily Viz, answers that question. It shows how many babies were born in the United States on each day of the year from 1973 to 1999. It also demonstrates a few trends visible from the data.