SAP usage report

Hi All,

I'm looking for a Tcodes execution usage report in SAP.

Tcodes such: ST03N, SDAT, SM20, STATTRACE and so on are not useful for me, because I need to get the information

for all the user in the system for a long period (not just for 24 hours up to one month).

For example: I need to now which Tcodes had been excuted by which users in the last 6 months, and how many times each Tcode had been executed by each user in that period.

If there is no Tcode/report gathering these information, can you please noted which tables containe these inforamtion?

Thanks in advance for your help.