This year alone New York City has experienced its third lowest homicide rates of 502. The lowest being in 2009 of 471 and the second being in 2007 of 499. The decline in homicide is also more significant or sharper in the city than anywhere else in the nation. Mayor Bloomberg attributes the decrease to the work of police and fire departments but experts are not too sure about that. Experts such as Andrew Karmen, sociology professor at John Jay College of Criminal Justice, attributes the decline to the current lifestyle of young adults. Karmen believes because young adults from ages 18 to 24 are attending colleges, they are less likely be murdered then young adults that do not attend college.