After searching google on when f-15e got the aim 9x. I manage to Stumble on a dot&e annual report on the aim 9x program. So I went to DOT&E web page and found the had and annual report on the aim 9x beginning from 1999 to 2015. I found that the aim 9x was integrated on the f-15e in 2015.2015aim9x.pdf I also found when it was integrated on F/A-18A/F, F-15C, F-22, f-35 and f-16C/D.
Beginning in 2003 F-15C/D and F/A-C/D started receive the aim-9x. 2003AIM-9X.pdf
F/A-18E/F Started to receive the aim-9x in 2005.2005aim-9x.pdf
F-16C started to received the aim-9x in 2010.2010aim9x.pdf
F-22 and F-35 Started to be integrated with aim 9x in 2015.