Via Questioning Transphobia, TransGender Europe (TGEU) is collaborating with an online multilingual magazine Liminalis on the Trans Murder Monitoring Project. Their preliminary results show that over the past few years, there has been an increase in the number of reported murders of trans people. Since early 2008 the murder of a trans person is reported every third day, on average.

From a TGEU and Liminalis press release:
Every 3rd day the murder of a trans person is reported:
Trans Murder Monitoring Project reveals more than 200 reported murders of trans persons in the last 1 1/2 years
In April 2009 the international NGO Transgender Europe (TGEU) in cooperation with the multilingual Online-Magazine “Liminalis — A Journal for Sex/Gender Emancipation and Resistance” started a new project, the /Trans Murder Monitoring Project/, which focuses on systematically reporting murdered trans people on a worldwide scale.
The very preliminary results of the first step of this project have revealed a total of 204 cases of reported murders of trans people world wide in the last 1 1/2 years. 121 cases of murdered trans people have been reported in 2008. From January to June 2009 already 83 cases of murdered trans people have been reported.
Furthermore, the preliminary results show an increase in the number of reports of murdered trans people over the last years. Since the beginning of 2008 the murder of a trans person is reported every third day, on average.
The cases have been reported from all six World regions: North America, Latin America, Europe, Africa, Asia, and Oceania. The majority of cases have been reported from Latin America and North America. On these continents the majority of cases have been reported from Brazil (59) and the U.S.A. (16) for 2008 and from Brazil (23), Venezuela (20), and Guatemala (10) for the first six months of 2009. Moreover, the preliminary results show a total of 11 murdered trans people reported for Colombia followed by 5 for Honduras and 4 for Mexico and Venezuela for 2008, and 6 for Mexico and 3 for Argentina, and the Dominican Republic for the first six months of 2009.