Reports by default only show data for 1 day. If you want to view data from the last 30 days, then the report must be modified to change this value.
To accomplish this you may try the below steps:
1- Right-click the report and click "Edit".
2- Click on "Report Filters" and then click the gear icon next to "Date/Time Range".
3- Specify the amount of days. For example, if you want the report to show data of user accounts that were disabled in the last 30 days, then specify the number # 30 in this section and click ok.
4- Now, the report will show the value based on the amount of days that you specified above step # 3.
You should be able to see 30 days worth of data in the report after trying the above steps.