Enrollment grew to about 1,000 when World War II broke out. It reached more than 3,500 in 1950 with the return of the veterans and grew steadily. When the baby boomers hit college age, the university's enrollment topped 10,000. However, local enrollment decreased in the 1960s when Wright State University was established and Sinclair Community College was expanded, moving UD toward becoming a national university. In 2012, more than half of the undergraduates were from states other than Ohio. International enrollment has grown as well. In 2012 a record of more than 1,500 international students were enrolled.