Dynamic Sql To Loop Over Fiscal Years

thanks for reading.

i'm interested in improving the format of this query. consider me clueless today, if you will. :) how can i fix this to make it dynamically move over the years? is there something i can do with set manipulation that is smarter than this?

the goal of this query is to return cases per year, where "year" is defined as (Oct 1, YYYY - Sep 30, YYYY+1) instead of the typical YYYY

problem is, i have to write it as some cludgy dynamic sql looping over an incremented year. i don't know of any other way.

again, thanks for reading ... and any help in advance.

SELECTcount(*) as 'Data Points', '2001' as 'Experiment Year'
FROM tbl_experiment_data

WHEREstart_date BETWEEN '9/30/2001' AND '10/01/2002'
and completion_date BETWEEN '9/30/2001' AND '10/01/2002'
and status = 'CaseClosed'

UNION

SELECTcount(*) as 'Data Points', '2002' as 'Experiment Year'
FROM tbl_experiment_data

WHEREstart_date BETWEEN '9/30/2002' AND '10/01/2003'
and completion_date BETWEEN '9/30/2002' AND '10/01/2003'
and status = 'CaseClosed'

UNION

...


expected output....

Data Points______ Experiment Year
32_____________ 2001
102____________ 2002
.... ....