The "/reports" page:

Shows activity reports for the repository.

Query Parameters:

view=REPORT_NAME
Valid REPORT_NAME values:

byyear
bymonth
byweek
byweekday
byhour
byuser
byfile
lastchng
user=NAME
Restricts statistics to the given user
type=TYPE
Restricts the report to a specific event type:

all (everything),
ci (check-in)
m (merge check-in),
n (non-merge check-in)
f (forum post)
w (wiki page change)
t (ticket change)
g (tag added or removed)
Defaulting to all event types.
from=DATETIME
Consider only events after this timestamp (requires to)
to=DATETIME
Consider only events before this timestamp (requires from)

The view-specific query parameters include:

view=byweek:

y=YYYY
The year to report (default is the server's current year).