The number of serious crimes in Brookline dropped by about 12 percent in 2013 from 2012, according to a report released by police. While Brookline police said the six rapes reported in the town in 2013 was up from three in 2012, there were no murders, robberies were down by 54 percent to 13, and the number of assaults fell by 26 percent to 131 . The Brookline police year-end review of serious crimes states that violent crimes fell from 208 in 2012 to 150 last year, a drop of 28 percent. Overall, the police reported that crime is down by 61 percent since 1994. Among property crimes, there was a slight uptick in the number of motor vehicle thefts, which increased from 18 in 2012 to 20 during 2013. But larcenies fell from 640 in 2012 to 609 last year, and the number of burglaries fell from 129 to 100 during the same period.