I don't really see a way in just 1 report
CR prints 1 row on the report for each row of data. The data is coming out as 3 rows, and the logic doesn't allow them to over lap.
The only option that I can see is to use a subreport for the field, and to change this from a detail line to a group header or footer (so that it only appears once on the report). The subreport would print the data, and each one would be separate from the other, so they would not have a blank space at the top.
HTH