D.C. Mayor Vincent Gray and District Police Chief Cathy Lanier announced at a news conference on Thursday that the 88 homicides reported in the city in 2012 represent the lowest number of slayings within the city in 50 years. Lanier noted that while robberies and sexual assaults increased in 2012, violent crimes made up just 19.6 percent of the total number of crimes, with “property crime” making up 84.4 percent of the total number of reported crimes in 2012. Lanier didn’t include statistics on hate crimes in a crime data presentation she gave at the news conference. But preliminary data on hate crimes posted on the D.C. police website this week show hate crimes targeting victims based on their sexual orientation increased 19 percent, from 37 between January and November of 2011 to 44 between January and November of 2012. The data show the number of hate crimes against transgender residents increased from 8 to 9 in the same 11-month period from 2011 to 2012, representing a 13 percent hike. Police officials said hate crime data for December 2012 was being tabulated and would be released at a later date.