As awareness of the field increases, so does the interest. PM&R fits well with many people's ideals of how to approach illness, injury and disease. DO applications to PM&R have picked up considerably in recent years.
PM&R has gained in the area of demand due to recognition of it's potential symbiotic relationship with other fields - notably orthopedics, neurosurgery and sports. Also primary care doctors more and more are recognizing the wide range of services a skilled Physiatrist can offer.
Therefore, it seems logical that over the next decade, there should be increasing demand for our services, especially with a growing and aging population.
That being said, no one knows what the political and financial climates hold for us. 15 - 20 years ago, PM&R came in to demand as hospitals recognized the need for skilled inpt rehab, and more importantly, realized they could make a lot of money on it. 10 years ago, that changed, and they are not as sought after.