1997: Last Time 400 Mark Reached (AP) PHILADELPHIA -- Four murders on the day before Christmas pushed the city's 2006 homicide total to 400 for the first time in nearly a decade. The last time the city reached the 400 mark was 1997, when the year ended with 418 murders. That marked the last of eight years in the 1990s in which there were at least 400 killings, including a record 500 in 1990, according to police statistics. The spate of overnight violence started when pizza delivery man Michael Orlando, 43, was shot while trying to make a delivery...