The numbers specifically refer to the number of new cases identified since the report last year, which was released in April 2009.
Of the 62 cases, 27 are cases from January 2009 to approximately February 2010. There are 27 new cases from the previous 13 or 14 months. The remaining cases of those 62 are actually from information collected that can be identified to relate to previous years, based on archival research and additional information that has been found as we searched through secondary sources, police reports, and so on and so forth.