The National Center for Health Statistics (NCHS) recently released their latest numbers on the U.S. national birth rate, which demonstrated a 4% decline between 2007 and 2009 – the highest rate of decline in any two-year period during the past 30 years. The sharpest rate of decline (9%) was among women aged 20 to 24. By region, Western and Southeastern states saw the greatest decline. The cause of the trend is likely multifactorial. Some researchers attribute the decline to the current recession, while new research from Stanford University suggest that more college students are reporting that they are virgins. Iowa State University sociologist Teresa Downing-Matibag theorizes that technology may also play a role, suggesting that virtual sex may be competing with the real thing. "They can go to those websites and have sexual relationships watching a webcam. They can still be a virgin and have 100 different partners online through chat rooms or webcams," she says. And what about younger children? Data from the NCHS shows that for women between 15-19 years old, the birth rate fell 8%, to 39.1 babies per 1,000 women