How to reorder columns and make all labels appear?

I have a chart in my 2008 R2 report:

I want to reorder these programs in alphabetical order and I want to display all programs.  In the image above, see how only some of the program labels appear?

Here is some sample table data:

create table sample_programs
(
program_name varchar(25),
LOS int,
people_id int identity(1,1)
)

insert sample_programs values('transitional living',50),('educational services',65),('Residential Treatment', 77),
('Regular Foster Care', 23)

And the SSRS Chart Value expression:

=Sum(Fields!program_los.Value) / 
(CountDistinct(Fields!people_id.Value))

Ryan D